diff --git a/source/libs/function/src/tudf.c b/source/libs/function/src/tudf.c
index 73f5f8ce68b102317b3a17c0048b15eae0f9220f..32e57565d4b94d1aa71ed9cc434983e96c309a9a 100644
--- a/source/libs/function/src/tudf.c
+++ b/source/libs/function/src/tudf.c
@@ -88,7 +88,7 @@ static int32_t udfSpawnUdfd(SUdfdData *pData) {
   }
 #ifdef WINDOWS
   if (strlen(path) == 0) {
-    strcat(path, "C:\\TDengine")
+    strcat(path, "C:\\TDengine");
   }
   strcat(path, "\\udfd.exe");
 #else