diff --git a/Source/Core/VideoCommon/TextureCacheBase.cpp b/Source/Core/VideoCommon/TextureCacheBase.cpp
index 2f330bb2bc..3e42f042ba 100644
--- a/Source/Core/VideoCommon/TextureCacheBase.cpp
+++ b/Source/Core/VideoCommon/TextureCacheBase.cpp
@@ -137,7 +137,7 @@ void TextureCacheBase::Invalidate()
   texture_pool.clear();
 }
 
-void TextureCacheBase::OnConfigChanged(VideoConfig& config)
+void TextureCacheBase::OnConfigChanged(const VideoConfig& config)
 {
   if (config.bHiresTextures != backup_config.hires_textures ||
       config.bCacheHiresTextures != backup_config.cache_hires_textures)
diff --git a/Source/Core/VideoCommon/TextureCacheBase.h b/Source/Core/VideoCommon/TextureCacheBase.h
index 5e5a28b34b..e8ecf5b6fe 100644
--- a/Source/Core/VideoCommon/TextureCacheBase.h
+++ b/Source/Core/VideoCommon/TextureCacheBase.h
@@ -204,7 +204,7 @@ public:
 
   bool Initialize();
 
-  void OnConfigChanged(VideoConfig& config);
+  void OnConfigChanged(const VideoConfig& config);
 
   // Removes textures which aren't used for more than TEXTURE_KILL_THRESHOLD frames,
   // frameCount is the current frame number.