diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index 016ce1bb55dfa764e58d0ddf08587abb4ee39bfe..a10bf8bf8c2c3cf83906392aa69a78bcba180ace 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -106,6 +106,7 @@ char **strsplit(char *z, const char *delim, int32_t *num) {
     if ((*num) >= size) {
       size = (size << 1);
       split = realloc(split, POINTER_BYTES * size);
+      assert(NULL != split);
     }
   }