diff --git a/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp b/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp
index 2d4a141b06..ce82b85875 100644
--- a/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp
+++ b/stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp
@@ -11,7 +11,7 @@ static PIXELFORMATDESCRIPTOR g_CurrentPixelFormat;
 static HGLRC g_HGLRC = NULL;
 static HGLRC g_HGLRC_Background = NULL;
 
-void DestroyGraphicsWindowAndOpenGLContext()
+static void DestroyGraphicsWindowAndOpenGLContext()
 {
 	if( g_HGLRC != NULL )
 	{