diff --git a/dll/directx/wine/d3dx9_36/effect.c b/dll/directx/wine/d3dx9_36/effect.c
index e8ae7b54c22..3538b1578d1 100644
--- a/dll/directx/wine/d3dx9_36/effect.c
+++ b/dll/directx/wine/d3dx9_36/effect.c
@@ -4555,7 +4555,9 @@ static HRESULT WINAPI ID3DXEffectImpl_CloneEffect(ID3DXEffect *iface,
     if (!device)
         return D3DERR_INVALIDCALL;
 
-    return E_NOTIMPL;
+    iface->lpVtbl->AddRef(iface);
+    *effect = iface;
+    return S_OK;
 }
 
 #if D3DX_SDK_VERSION >= 27
diff --git a/sdk/tools/winesync/d3dx9_staging/0004-d3dx9_36__Improve_stub_for_ID3DXEffectImpl_CloneEffect.diff b/sdk/tools/winesync/d3dx9_staging/0004-d3dx9_36__Improve_stub_for_ID3DXEffectImpl_CloneEffect.diff
new file mode 100644
index 00000000000..7277ee9c053
--- /dev/null
+++ b/sdk/tools/winesync/d3dx9_staging/0004-d3dx9_36__Improve_stub_for_ID3DXEffectImpl_CloneEffect.diff
@@ -0,0 +1,15 @@
+diff --git a/dll/directx/wine/d3dx9_36/effect.c b/dll/directx/wine/d3dx9_36/effect.c
+index e8ae7b5..3538b15 100644
+--- a/dll/directx/wine/d3dx9_36/effect.c
++++ b/dll/directx/wine/d3dx9_36/effect.c
+@@ -4555,7 +4555,9 @@ static HRESULT WINAPI ID3DXEffectImpl_CloneEffect(ID3DXEffect *iface,
+     if (!device)
+         return D3DERR_INVALIDCALL;
+ 
+-    return E_NOTIMPL;
++    iface->lpVtbl->AddRef(iface);
++    *effect = iface;
++    return S_OK;
+ }
+ 
+ #if D3DX_SDK_VERSION >= 27