diff --git a/dlls/d3d9/d3d9_main.c b/dlls/d3d9/d3d9_main.c
index 879673339f4..0afdc046b44 100644
--- a/dlls/d3d9/d3d9_main.c
+++ b/dlls/d3d9/d3d9_main.c
@@ -90,17 +90,6 @@ void* WINAPI Direct3DShaderValidatorCreate9(void)
     return NULL;
 }
 
-/*******************************************************************
- *       DllMain
- */
-BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, void *reserved)
-{
-    if (reason == DLL_PROCESS_ATTACH)
-        DisableThreadLibraryCalls(inst);
-
-    return TRUE;
-}
-
 /***********************************************************************
  *              D3DPERF_BeginEvent (D3D9.@)
  */