diff --git a/source/libs/function/src/tudf.c b/source/libs/function/src/tudf.c
index eff3c6cc7b28d668ef547ab92786915ffb26121c..459ee583a4b8a44a19ae4173225014c503a6ce08 100644
--- a/source/libs/function/src/tudf.c
+++ b/source/libs/function/src/tudf.c
@@ -137,7 +137,7 @@ static int32_t udfSpawnUdfd(SUdfdData *pData) {
     fnError("can not set correct udfd LD_LIBRARY_PATH");
   }
   char ldLibPathEnvItem[1024 + 32] = {0};
-  snprintf(ldLibPathEnvItem, 1024 + 32, "%s=%s", "LD_LIBRARY_PATH", ldLibPathEnvItem);
+  snprintf(ldLibPathEnvItem, 1024 + 32, "%s=%s", "LD_LIBRARY_PATH", udfdPathLdLib);
 
   char *envUdfd[] = {dnodeIdEnvItem, thrdPoolSizeEnvItem, ldLibPathEnvItem, NULL};
   options.env = envUdfd;