diff --git a/src/util/src/ttokenizer.c b/src/util/src/ttokenizer.c
index 8414b6292c43f674d62a61338ca271273922a209..0c7b65be80685e79312906010f476073f71b350f 100644
--- a/src/util/src/ttokenizer.c
+++ b/src/util/src/ttokenizer.c
@@ -592,7 +592,7 @@ SStrToken tscReplaceStrToken(char **str, SStrToken *token, const char* newToken)
   size_t nsize = strlen(newToken);
   int32_t size = (int32_t)strlen(*str) - token->n + (int32_t)nsize + 1;
   int32_t bsize = (int32_t)((uint64_t)token->z - (uint64_t)src);
-  SStrToken ntoken;
+  SStrToken ntoken = {0};
 
   *str = calloc(1, size);