diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index b24162ce5fae76846bf208daa1c83d442d6ddeff..86e133df17957b57935659f9def12160020f947b 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -434,7 +434,7 @@ int tasoUcs4Compare(void* f1_ucs4, void *f2_ucs4, int bytes) {
 #endif
 
 #else
-  return wcsncmp((wchar_t *)f1_ucs4, (wchar_t *)f2_ucs4, bytes);
+  return wcsncmp((wchar_t *)f1_ucs4, (wchar_t *)f2_ucs4, bytes / TSDB_NCHAR_SIZE);
 #endif
 }