diff --git a/src/core/hw/gpu.h b/src/core/hw/gpu.h
index 2e3a9f779..a00adbf53 100644
--- a/src/core/hw/gpu.h
+++ b/src/core/hw/gpu.h
@@ -263,17 +263,17 @@ struct Regs {
 
     INSERT_PADDING_WORDS(0x9c3);
 
-    static inline size_t NumIds() {
+    static constexpr size_t NumIds() {
         return sizeof(Regs) / sizeof(u32);
     }
 
-    u32& operator [] (int index) const {
-        u32* content = (u32*)this;
+    const u32& operator [] (int index) const {
+        const u32* content = reinterpret_cast<const u32*>(this);
         return content[index];
     }
 
     u32& operator [] (int index) {
-        u32* content = (u32*)this;
+        u32* content = reinterpret_cast<u32*>(this);
         return content[index];
     }
 
diff --git a/src/core/hw/lcd.h b/src/core/hw/lcd.h
index bcce6d8cf..3dd877fbf 100644
--- a/src/core/hw/lcd.h
+++ b/src/core/hw/lcd.h
@@ -38,17 +38,17 @@ struct Regs {
     u32 backlight_bottom;
     INSERT_PADDING_WORDS(0x16F);
 
-    static inline size_t NumIds() {
+    static constexpr size_t NumIds() {
         return sizeof(Regs) / sizeof(u32);
     }
 
-    u32& operator [] (int index) const {
-        u32* content = (u32*)this;
+    const u32& operator [] (int index) const {
+        const u32* content = reinterpret_cast<const u32*>(this);
         return content[index];
     }
 
     u32& operator [] (int index) {
-        u32* content = (u32*)this;
+        u32* content = reinterpret_cast<u32*>(this);
         return content[index];
     }
 
diff --git a/src/video_core/pica.h b/src/video_core/pica.h
index 7fb3aa481..337cff8ce 100644
--- a/src/video_core/pica.h
+++ b/src/video_core/pica.h
@@ -1221,17 +1221,17 @@ struct Regs {
     // Used for debugging purposes, so performance is not an issue here
     static std::string GetCommandName(int index);
 
-    static inline size_t NumIds() {
+    static constexpr size_t NumIds() {
         return sizeof(Regs) / sizeof(u32);
     }
 
-    u32& operator [] (int index) const {
-        u32* content = (u32*)this;
+    const u32& operator [] (int index) const {
+        const u32* content = reinterpret_cast<const u32*>(this);
         return content[index];
     }
 
     u32& operator [] (int index) {
-        u32* content = (u32*)this;
+        u32* content = reinterpret_cast<u32*>(this);
         return content[index];
     }