diff --git a/ddraw.def b/ddraw.def
index 60d496f..c1b0b64 100644
--- a/ddraw.def
+++ b/ddraw.def
@@ -2,6 +2,7 @@ LIBRARY     ddraw.dll
 
 EXPORTS
     AcquireDDThreadLock                       @1
+    CompleteCreateSysmemSurface               @2
     D3DParseUnknownCommand                    @3
     DDInternalLock                            @5
     DDInternalUnlock                          @6
diff --git a/src/dllmain.c b/src/dllmain.c
index 4ab586b..8cf02a5 100644
--- a/src/dllmain.c
+++ b/src/dllmain.c
@@ -185,6 +185,14 @@ HRESULT WINAPI DirectDrawEnumerateW(LPDDENUMCALLBACKW lpCallback, LPVOID lpConte
     return DD_OK;
 }
 
+DWORD WINAPI CompleteCreateSysmemSurface(DWORD a)
+{
+    TRACE("NOT_IMPLEMENTED -> %s()\n", __FUNCTION__);
+    DWORD ret = 0;
+    TRACE("NOT_IMPLEMENTED <- %s\n", __FUNCTION__);
+    return ret;
+}
+
 HRESULT WINAPI D3DParseUnknownCommand(LPVOID lpCmd, LPVOID* lpRetCmd)
 {
     TRACE("NOT_IMPLEMENTED -> %s(lpCmd=%p, lpRetCmd=%p)\n", __FUNCTION__, lpCmd, lpRetCmd);