diff --git a/dlls/d3dx10_43/async.c b/dlls/d3dx10_43/async.c
index c910b4a6246..25df663ef58 100644
--- a/dlls/d3dx10_43/async.c
+++ b/dlls/d3dx10_43/async.c
@@ -20,7 +20,6 @@
 #include "wine/port.h"
 #include "d3d10_1.h"
 #include "d3dx10.h"
-#include "d3dx10core.h"
 #include "d3dcompiler.h"
 
 #include "wine/debug.h"