diff --git a/include/commdlg.h b/include/commdlg.h
index b6e40c68ba2..67b18a20fb8 100644
--- a/include/commdlg.h
+++ b/include/commdlg.h
@@ -264,7 +264,7 @@ DECL_WINELIB_TYPE_AW(LPFINDREPLACE)
 #define FR_MATCHKASHIDA                 0x40000000
 #define FR_MATCHALEFHAMZA               0x80000000
 
-typedef UINT (CALLBACK *LPCFHOOKPROC)(HWND,UINT,WPARAM,LPARAM);
+typedef UINT_PTR (CALLBACK *LPCFHOOKPROC)(HWND,UINT,WPARAM,LPARAM);
 
 typedef struct tagCHOOSEFONTA
 {