diff --git a/src/log.c b/src/log.c
index c7acb5b29..c0d439239 100644
--- a/src/log.c
+++ b/src/log.c
@@ -575,6 +575,8 @@ int add_to_logformat_list(char *start, char *end, int type, struct lf_expr *lf_e
 		struct logformat_node *node = calloc(1, sizeof(*node));
 		str = calloc(1, end - start + 1);
 		if (unlikely(!node || !str)) {
+			free(node);
+			free(str);
 			memprintf(err, "out of memory error");
 			return 0;
 		}