diff --git a/Source/Core/VideoCommon/VertexShaderManager.cpp b/Source/Core/VideoCommon/VertexShaderManager.cpp
index 46884a79d2..603fc2efb8 100644
--- a/Source/Core/VideoCommon/VertexShaderManager.cpp
+++ b/Source/Core/VideoCommon/VertexShaderManager.cpp
@@ -683,7 +683,7 @@ void VertexShaderManager::SetProjectionChanged()
 	bProjectionChanged = true;
 }
 
-void VertexShaderManager::SetMaterialColorChanged(int index, u32 color)
+void VertexShaderManager::SetMaterialColorChanged(int index)
 {
 	nMaterialsChanged[index] = true;
 }
diff --git a/Source/Core/VideoCommon/VertexShaderManager.h b/Source/Core/VideoCommon/VertexShaderManager.h
index 325b18a2cd..35c146c7aa 100644
--- a/Source/Core/VideoCommon/VertexShaderManager.h
+++ b/Source/Core/VideoCommon/VertexShaderManager.h
@@ -28,7 +28,7 @@ public:
 	static void SetTexMatrixChangedB(u32 value);
 	static void SetViewportChanged();
 	static void SetProjectionChanged();
-	static void SetMaterialColorChanged(int index, u32 color);
+	static void SetMaterialColorChanged(int index);
 
 	static void TranslateView(float x, float y, float z = 0.0f);
 	static void RotateView(float x, float y);
diff --git a/Source/Core/VideoCommon/XFStructs.cpp b/Source/Core/VideoCommon/XFStructs.cpp
index 089a458683..6a517dc0ab 100644
--- a/Source/Core/VideoCommon/XFStructs.cpp
+++ b/Source/Core/VideoCommon/XFStructs.cpp
@@ -62,7 +62,7 @@ static void XFRegWritten(int transferSize, u32 baseAddress, DataReader src)
 				if (xfmem.ambColor[chan] != newValue)
 				{
 					VertexManager::Flush();
-					VertexShaderManager::SetMaterialColorChanged(chan, newValue);
+					VertexShaderManager::SetMaterialColorChanged(chan);
 				}
 				break;
 			}
@@ -74,7 +74,7 @@ static void XFRegWritten(int transferSize, u32 baseAddress, DataReader src)
 				if (xfmem.matColor[chan] != newValue)
 				{
 					VertexManager::Flush();
-					VertexShaderManager::SetMaterialColorChanged(chan + 2, newValue);
+					VertexShaderManager::SetMaterialColorChanged(chan + 2);
 				}
 				break;
 			}