diff --git a/dlls/gdi32/gdi32.spec b/dlls/gdi32/gdi32.spec
index 2d57ebbce79..2e79346d634 100644
--- a/dlls/gdi32/gdi32.spec
+++ b/dlls/gdi32/gdi32.spec
@@ -282,7 +282,7 @@
 @ stdcall GetFontUnicodeRanges(ptr ptr)
 @ stdcall GetGlyphIndicesA(long ptr long ptr long)
 @ stdcall GetGlyphIndicesW(long ptr long ptr long)
-@ stub GetGlyphOutline
+@ stdcall GetGlyphOutline(long long long ptr long ptr ptr) GetGlyphOutlineA
 @ stdcall GetGlyphOutlineA(long long long ptr long ptr ptr)
 @ stdcall GetGlyphOutlineW(long long long ptr long ptr ptr)
 @ stub GetGlyphOutlineWow