diff --git a/src/citra_qt/debugger/graphics_vertex_shader.cpp b/src/citra_qt/debugger/graphics_vertex_shader.cpp
index f915d2bab..a5a5fe6b0 100644
--- a/src/citra_qt/debugger/graphics_vertex_shader.cpp
+++ b/src/citra_qt/debugger/graphics_vertex_shader.cpp
@@ -294,16 +294,16 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
     {
         // Highlight current instruction
         int current_record_index = par->cycle_index->value();
-        if (current_record_index < par->debug_data.records.size()) {
+        if (current_record_index < static_cast<int>(par->debug_data.records.size())) {
             const auto& current_record = par->debug_data.records[current_record_index];
-            if (index.row() == current_record.instruction_offset) {
+            if (index.row() == static_cast<int>(current_record.instruction_offset)) {
                 return QColor(255, 255, 63);
             }
         }
 
         // Use a grey background for instructions which have no debug data associated to them
         for (const auto& record : par->debug_data.records)
-            if (index.row() == record.instruction_offset)
+            if (index.row() == static_cast<int>(record.instruction_offset))
                 return QVariant();
 
         return QBrush(QColor(192, 192, 192));
@@ -494,7 +494,7 @@ void GraphicsVertexShaderWidget::Reload(bool replace_vertex_data, void* vertex_d
     debug_data = Pica::Shader::ProduceDebugInfo(input_vertex, num_attributes, shader_config, shader_setup);
 
     // Reload widget state
-    for (unsigned int attr = 0; attr < num_attributes; ++attr) {
+    for (int attr = 0; attr < num_attributes; ++attr) {
         unsigned source_attr = shader_config.input_register_map.GetRegisterForAttribute(attr);
         input_data_mapping[source_attr]->setText(QString("-> v%1").arg(attr));
         input_data_container[source_attr]->setVisible(true);
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp
index c10126513..00fa995f6 100644
--- a/src/core/hle/kernel/thread.cpp
+++ b/src/core/hle/kernel/thread.cpp
@@ -220,7 +220,7 @@ static void SwitchContext(Thread* new_thread) {
 
         // Clean up the thread's wait_objects, they'll be restored if needed during
         // the svcWaitSynchronization call
-        for (int i = 0; i < new_thread->wait_objects.size(); ++i) {
+        for (size_t i = 0; i < new_thread->wait_objects.size(); ++i) {
             SharedPtr<WaitObject> object = new_thread->wait_objects[i];
             object->RemoveWaitingThread(new_thread);
         }
diff --git a/src/core/hw/y2r.cpp b/src/core/hw/y2r.cpp
index 15f96ced8..48c45564f 100644
--- a/src/core/hw/y2r.cpp
+++ b/src/core/hw/y2r.cpp
@@ -324,7 +324,7 @@ void PerformConversion(ConversionConfiguration& cvt) {
 
         u32* output_buffer = reinterpret_cast<u32*>(data_buffer.get());
 
-        for (int i = 0; i < num_tiles; ++i) {
+        for (size_t i = 0; i < num_tiles; ++i) {
             int image_strip_width = 0;
             int output_stride = 0;
 
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index 50eb157a5..a613fe136 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -69,7 +69,7 @@ void RasterizerOpenGL::InitObjects() {
     }
 
     // Create sampler objects
-    for (int i = 0; i < texture_samplers.size(); ++i) {
+    for (size_t i = 0; i < texture_samplers.size(); ++i) {
         texture_samplers[i].Create();
         state.texture_units[i].sampler = texture_samplers[i].sampler.handle;
     }
@@ -601,8 +601,8 @@ void RasterizerOpenGL::SyncFramebuffer() {
     PAddr cur_fb_depth_addr = regs.framebuffer.GetDepthBufferPhysicalAddress();
     Pica::Regs::DepthFormat new_fb_depth_format = regs.framebuffer.depth_format;
 
-    bool fb_size_changed = fb_color_texture.width != regs.framebuffer.GetWidth() ||
-                           fb_color_texture.height != regs.framebuffer.GetHeight();
+    bool fb_size_changed = fb_color_texture.width != static_cast<GLsizei>(regs.framebuffer.GetWidth()) ||
+                           fb_color_texture.height != static_cast<GLsizei>(regs.framebuffer.GetHeight());
 
     bool color_fb_prop_changed = fb_color_texture.format != new_fb_color_format ||
                                  fb_size_changed;