diff --git a/src/core/system.cpp b/src/core/system.cpp
index 8a075bfe9..d59e12894 100644
--- a/src/core/system.cpp
+++ b/src/core/system.cpp
@@ -28,7 +28,7 @@ void Init(EmuWindow* emu_window) {
 }
 
 void Shutdown() {
-    //InputCommon::Shutdown();
+    InputCommon::Shutdown();
     VideoCore::Shutdown();
     HLE::Shutdown();
     Kernel::Shutdown();
diff --git a/src/input_common/input_common.cpp b/src/input_common/input_common.cpp
index d0af6ea39..afd4291e1 100644
--- a/src/input_common/input_common.cpp
+++ b/src/input_common/input_common.cpp
@@ -3,7 +3,10 @@
 // Refer to the license.txt file included.
 
 #include "input_common/input_common.h"
-#include "input_common/sdl_input/sdl_input.h"
+
+#ifdef _SDL_H
+    #include "input_common/sdl_input/sdl_input.h"
+#endif
 
 #include "core/core_timing.h"
 #include "core/settings.h"
@@ -19,11 +22,11 @@ static int input_event;
 //Ticks for CoreTiming event, same as VBlank in GPU
 static u64 frame_ticks;
 
-///Callback for CoreTiming
+/// Callback for CoreTiming
 static void InputCallback(u64 userdata, int cycles_late) {
 
     //Call user input plugin Poll()
-    if(g_user_input != nullptr) {
+    if (g_user_input != nullptr) {
         g_user_input->Poll();
     }
 
@@ -35,17 +38,18 @@ std::string ControllerBase::GetDeviceName() const {
     return device_name;
 }
 
-
 const Service::HID::PadState ControllerBase::GetPadState() const {
     return controller.pad_state;
 }
 
 void Init(ControllerBackends backend) {
-    switch(backend) {
-        //SDL2 backend selected
-        case SDL2_JOY: 
-            g_user_input = new SDLController();
-            break;
+    switch (backend) {
+        #ifdef _SDL_H
+            //SDL2 backend selected
+            case SDL2_JOY:
+                g_user_input = new SDLController();
+                break;
+        #endif
 
         //No backend selected
         case NO_JOY:
@@ -57,8 +61,8 @@ void Init(ControllerBackends backend) {
     }
 
     //Shutdown immediately if backend failed to initialize
-    if((g_user_input != nullptr) && (!g_user_input->activated)) {
-        ShutDown();
+    if (g_user_input != nullptr && !g_user_input->activated) {
+        Shutdown();
         return;
     }
 
@@ -69,8 +73,8 @@ void Init(ControllerBackends backend) {
     CoreTiming::ScheduleEvent(frame_ticks, input_event);
 }
 
-void ShutDown() {
-    if((g_user_input != nullptr)
+void Shutdown() {
+    if (g_user_input != nullptr) {
         delete g_user_input;
         g_user_input = nullptr;
     }
diff --git a/src/input_common/input_common.h b/src/input_common/input_common.h
index aab75267f..05f5d9617 100644
--- a/src/input_common/input_common.h
+++ b/src/input_common/input_common.h
@@ -9,7 +9,7 @@
 
 namespace InputCommon {
 
-///Enum defining available backends
+/// Enum defining available backends
 enum ControllerBackends {
     NO_JOY,
     SDL2_JOY
@@ -20,43 +20,41 @@ public:
     ControllerBase() {}
     virtual ~ControllerBase() {}
 
-    ///Initializes input based on specific backends
+    /// Initializes input based on specific backends
     virtual bool Init() = 0;
 
-    ///Grabs a list of devices supported by the backend
+    /// Grabs a list of devices supported by the backend
     virtual void DiscoverDevices() = 0;
 
-    ///Grab and process input
+    /// Grab and process input
     virtual void Poll() = 0;
 
-    ///Shuts down all backend related data
-    virtual void ShutDown() = 0;
+    /// Shuts down all backend related data
+    virtual void Shutdown() = 0;
 
-    ///Returns internal name of currently selected device. Expose this to the UI
+    /// Returns internal name of currently selected device. Expose this to the UI
     std::string GetDeviceName() const;
 
-    ///Returns internal pad state
-    const Service::HID::PadState GetPadState() const; 
+    /// Returns internal pad state
+    const Service::HID::PadState GetPadState() const;
 
     bool activated;
 
 protected:
-    ///Internal name of currently selected device
+    /// Internal name of currently selected device
     std::string device_name;
 
-    ///Internal view this specific object will have of 3DS input states
+    /// Internal view this specific object will have of 3DS input states
     ControllerState controller;
 };
 
-///Initialize the user input system
+/// Initialize the user input system
 void Init(ControllerBackends backend);
 
-///Deactive the user input system
-void ShutDown();
+/// Deactive the user input system
+void Shutdown();
 
-///InputCommon 'plugin'
+/// InputCommon 'plugin'
 extern ControllerBase* g_user_input;
 
 } // namespace
-
-
diff --git a/src/input_common/sdl_input/sdl_input.cpp b/src/input_common/sdl_input/sdl_input.cpp
index 298c41011..a837bca1d 100644
--- a/src/input_common/sdl_input/sdl_input.cpp
+++ b/src/input_common/sdl_input/sdl_input.cpp
@@ -22,13 +22,13 @@ SDLController::SDLController() {
 }
 
 SDLController::~SDLController() {
-    ShutDown();
+    Shutdown();
 }
 
 bool SDLController::Init() {
 
     //Attempt to initialize SDL with joystick only
-    if(SDL_Init(SDL_INIT_JOYSTICK) != 0) {
+    if (SDL_Init(SDL_INIT_JOYSTICK) != 0) {
         return false;
     }
 
@@ -36,7 +36,7 @@ bool SDLController::Init() {
     //TODO - Use DiscoverDevice to generate a list of available joysticks, then open the correct index
     jpad = SDL_JoystickOpen(index);
 
-    if(jpad == nullptr) {
+    if (jpad == nullptr) {
         return false;
     }
 
@@ -55,17 +55,17 @@ bool SDLController::Init() {
 
 void SDLController::DiscoverDevices() {}
 
-void SDLController::ShutDown() {
+void SDLController::Shutdown() {
     //Attempt to close joystick with SDL
-    if(jpad != nullptr) {
+    if (jpad != nullptr) {
         SDL_JoystickClose(jpad);
     }
 }
 
 void SDLController::Poll() {
-    if(SDL_PollEvent(&input_event)) {
-        if((input_event.type == SDL_JOYBUTTONDOWN) || (input_event.type == SDL_JOYBUTTONUP) 
-        || (input_event.type == SDL_JOYAXISMOTION) || (input_event.type == SDL_JOYHATMOTION)) { 
+    if (SDL_PollEvent(&input_event)) {
+        if (input_event.type == SDL_JOYBUTTONDOWN || input_event.type == SDL_JOYBUTTONUP
+        || input_event.type == SDL_JOYAXISMOTION || input_event.type == SDL_JOYHATMOTION) {
             ProcessInput();
         }
     }
@@ -77,12 +77,12 @@ void SDLController::ProcessInput() {
     int val = 0;
 
     //Generate the id based on input from an event
-    switch(input_event.type) {
+    switch (input_event.type) {
         //Joystick button press events
         case SDL_JOYBUTTONDOWN:
             pad_id = 100;
             pad_id += input_event.jbutton.button;
-            
+
             controller.pad_state.hex |= KeyMap::GetPadKey({pad_id, joypad_id}).hex;
             break;
 
@@ -100,19 +100,19 @@ void SDLController::ProcessInput() {
             pad_id += (input_event.jaxis.axis * 2);
             val = input_event.jaxis.value;
 
-            if(val > 0) {
+            if (val > 0) {
                 pad_id += 1;
             }
 
             //If analog input is beyond dead zone, set it
-            if(CheckDeadZone(val)) {
+            if (CheckDeadZone(val)) {
                 controller.pad_state.hex |= KeyMap::GetPadKey({pad_id, joypad_id}).hex;
             } else {
                 controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id, joypad_id}).hex;
             }
 
             //Release opposite axis
-            if(pad_id % 2 == 0) {
+            if (pad_id % 2 == 0) {
                 controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id+1, joypad_id}).hex;
             } else {
                 controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id-1, joypad_id}).hex;
@@ -125,7 +125,7 @@ void SDLController::ProcessInput() {
             pad_id = 300;
             pad_id += input_event.jhat.hat * 4;
 
-            switch(input_event.jhat.value) {
+            switch (input_event.jhat.value) {
                 case SDL_HAT_CENTERED:
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id, joypad_id}).hex;
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id+1, joypad_id}).hex;
@@ -154,35 +154,35 @@ void SDLController::ProcessInput() {
                     controller.pad_state.hex |= KeyMap::GetPadKey({pad_id+3, joypad_id}).hex;
                     break;
 
-                case SDL_HAT_RIGHT: 
+                case SDL_HAT_RIGHT:
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id, joypad_id}).hex;
                     controller.pad_state.hex |= KeyMap::GetPadKey({pad_id+1, joypad_id}).hex;
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id+2, joypad_id}).hex;
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id+3, joypad_id}).hex;
                     break;
 
-                case SDL_HAT_RIGHTUP: 
+                case SDL_HAT_RIGHTUP:
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id, joypad_id}).hex;
                     controller.pad_state.hex |= KeyMap::GetPadKey({pad_id+1, joypad_id}).hex;
                     controller.pad_state.hex |= KeyMap::GetPadKey({pad_id+2, joypad_id}).hex;
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id+3, joypad_id}).hex;
                     break;
 
-                case SDL_HAT_RIGHTDOWN: 
+                case SDL_HAT_RIGHTDOWN:
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id, joypad_id}).hex;
                     controller.pad_state.hex |= KeyMap::GetPadKey({pad_id+1, joypad_id}).hex;
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id+2, joypad_id}).hex;
                     controller.pad_state.hex |= KeyMap::GetPadKey({pad_id+3, joypad_id}).hex;
                     break;
 
-                case SDL_HAT_UP: 
+                case SDL_HAT_UP:
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id, joypad_id}).hex;
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id+1, joypad_id}).hex;
                     controller.pad_state.hex |= KeyMap::GetPadKey({pad_id+2, joypad_id}).hex;
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id+3, joypad_id}).hex;
                     break;
 
-                case SDL_HAT_DOWN: 
+                case SDL_HAT_DOWN:
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id, joypad_id}).hex;
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id+1, joypad_id}).hex;
                     controller.pad_state.hex &= ~KeyMap::GetPadKey({pad_id+2, joypad_id}).hex;
@@ -228,9 +228,9 @@ void SDLController::SetDeadZone(int range) {
 }
 
 bool SDLController::CheckDeadZone(int range) {
-    if((range < -dead_zone) || (range > dead_zone)) {
+    if ((range < -dead_zone) || (range > dead_zone)) {
         return true;
-    } else if((range > -dead_zone) && (range < dead_zone)) {
+    } else if ((range > -dead_zone) && (range < dead_zone)) {
         return false;
     }
 }
diff --git a/src/input_common/sdl_input/sdl_input.h b/src/input_common/sdl_input/sdl_input.h
index 73ea627db..32db3aaa3 100644
--- a/src/input_common/sdl_input/sdl_input.h
+++ b/src/input_common/sdl_input/sdl_input.h
@@ -10,50 +10,48 @@
 
 namespace InputCommon {
 
-class SDLController  : virtual public ControllerBase {
+class SDLController final : public ControllerBase {
 public:
     SDLController();
     ~SDLController();
 
-    ///Initializes input via SDL2
-    bool Init();
+    /// Initializes input via SDL2
+    bool Init() override;
 
-    ///Grabs a list of devices supported by the backend
-    void DiscoverDevices();
+    /// Grabs a list of devices supported by the backend
+    void DiscoverDevices() override;
 
-    ///Grab and process input via SDL2
-    void Poll();
+    /// Grab and process input via SDL2
+    void Poll() override;
 
-    ///Shuts down all joysticks opened by SDL2
-    void ShutDown();
+    /// Shuts down all joysticks opened by SDL2
+    void Shutdown() override;
 
-    ///Processes input when polling
+    /// Processes input when polling
     void ProcessInput();
 
-    ///Sets up keymaps from input configuration
+    /// Sets up keymaps from input configuration
     void SetupKeyMaps();
 
-    ///Sets analog deadzones
+    /// Sets analog deadzones
     void SetDeadZone(int range);
 
-    ///Checks if analog input is within the dead zone
+    /// Checks if analog input is within the dead zone
     bool CheckDeadZone(int range);
 
 private:
     SDL_Joystick* jpad;
 
-    ///SDL event used for polling
+    /// SDL event used for polling
     SDL_Event input_event;
 
-    ///Index of joystick, used for opening/closing a joystick
+    /// Index of joystick, used for opening/closing a joystick
     int index;
 
-    ///Keymap id for this controller
+    /// Keymap id for this controller
     int joypad_id;
 
     int dead_zone;
 };
 
 } //namespace
-
-