diff --git a/reactos/dll/win32/gdi32/include/gdi32p.h b/reactos/dll/win32/gdi32/include/gdi32p.h
index 6fa4a1d2b3a..dc573ada171 100644
--- a/reactos/dll/win32/gdi32/include/gdi32p.h
+++ b/reactos/dll/win32/gdi32/include/gdi32p.h
@@ -413,7 +413,7 @@ _lrintf(float f)
     }
 #else
     /* slow, but portable */
-    return (int)floor(x >= 0 ? x+0.5 : x-0.5);
+    return (int)(x >= 0 ? x+0.5 : x-0.5);
 #endif
 }