diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 73dab94fab74..ae0bd568ac45 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1422,6 +1422,7 @@ static int dso__load_kcore(struct dso *dso, struct map *map,
 				goto out_err;
 			}
 		}
+		map__zput(new_node->map);
 		free(new_node);
 	}