diff --git a/include/wine/wingdi16.h b/include/wine/wingdi16.h
index 8d007308ab7..ccf25f1810d 100644
--- a/include/wine/wingdi16.h
+++ b/include/wine/wingdi16.h
@@ -353,6 +353,7 @@ BOOL16      WINAPI FlattenPath16(HDC16);
 BOOL16      WINAPI FloodFill16(HDC16,INT16,INT16,COLORREF);
 BOOL16      WINAPI FrameRgn16(HDC16,HRGN16,HBRUSH16,INT16,INT16);
 UINT16      WINAPI GDIRealizePalette16(HDC16);
+DWORD       WINAPI GdiSeeGdiDo16(WORD,WORD,WORD,WORD);
 HPALETTE16  WINAPI GDISelectPalette16(HDC16,HPALETTE16,WORD);
 INT16       WINAPI GetArcDirection16(HDC16);
 BOOL16      WINAPI GetAspectRatioFilterEx16(HDC16,LPSIZE16);