diff --git a/reactos/lib/rtl/bitmap.c b/reactos/lib/rtl/bitmap.c
index feb742e0054..ec10b158026 100644
--- a/reactos/lib/rtl/bitmap.c
+++ b/reactos/lib/rtl/bitmap.c
@@ -36,7 +36,6 @@ static const signed char NTDLL_mostSignificant[16] = {
 
 static
 int
-__cdecl
 NTDLL_RunSortFn(const void *lhs,
                 const void *rhs)
 {