diff --git a/dlls/gdiplus/gdiplus.spec b/dlls/gdiplus/gdiplus.spec
index 61cc2de5710..587f2ab1cd3 100644
--- a/dlls/gdiplus/gdiplus.spec
+++ b/dlls/gdiplus/gdiplus.spec
@@ -234,7 +234,7 @@
 @ stdcall GdipFindFirstImageItem(ptr ptr)
 @ stub GdipFindNextImageItem
 @ stub GdipFlattenPath
-@ stdcall GdipFlush(long)
+@ stdcall GdipFlush(ptr long)
 @ stdcall GdipFree(ptr)
 @ stub GdipGetAdjustableArrowCapFillState
 @ stub GdipGetAdjustableArrowCapHeight