diff --git a/src/GPU3D_Compute.h b/src/GPU3D_Compute.h
index f3f184de..751737b7 100644
--- a/src/GPU3D_Compute.h
+++ b/src/GPU3D_Compute.h
@@ -59,7 +59,7 @@ public:
     void Blit(const GPU& gpu) override;
     void Stop(const GPU& gpu) override;
 
-    bool NeedsShaderCompile() { return ShaderStepIdx != 33; }
+    bool NeedsShaderCompile() override { return ShaderStepIdx != 33; }
     void ShaderCompileStep(int& current, int& count) override;
 private:
     ComputeRenderer(GLCompositor&& compositor);
diff --git a/src/OpenGLSupport.cpp b/src/OpenGLSupport.cpp
index f728386f..2740e157 100644
--- a/src/OpenGLSupport.cpp
+++ b/src/OpenGLSupport.cpp
@@ -160,7 +160,7 @@ void SaveShaderCache()
 
     Platform::FileSeek(file, 0, Platform::FileSeekOrigin::End);
 
-    printf("new shaders %d\n", NewShaders.size());
+    printf("new shaders %zu\n", NewShaders.size());
 
     for (u64 newShader : NewShaders)
     {