diff --git a/src/win/fs.c b/src/win/fs.c
index 6948f7ef..5248ac2a 100644
--- a/src/win/fs.c
+++ b/src/win/fs.c
@@ -541,7 +541,7 @@ static int uv__is_root(const wchar_t* path) {
   size_t len = wcslen(path);
 
   /* Test for \ */
-  if (len == 0 && IS_SLASH(path[0])) {
+  if (len == 1 && IS_SLASH(path[0])) {
     return 1;
   }