diff --git a/src/win/fs.c b/src/win/fs.c
index 879f1f1d..0475f433 100644
--- a/src/win/fs.c
+++ b/src/win/fs.c
@@ -715,10 +715,10 @@ void fs__readdir(uv_fs_t* req) {
     uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
   }
 
-#ifdef _MSC_VER
-  swprintf(path2, len + 3, fmt, pathw);
-#else
+#ifdef _CRT_NON_CONFORMING_SWPRINTFS
   swprintf(path2, fmt, pathw);
+#else
+  swprintf(path2, len + 3, fmt, pathw);
 #endif
   dir = FindFirstFileW(path2, &ent);
   free(path2);