diff --git a/tests/qtest/fuzz/qos_fuzz.c b/tests/qtest/fuzz/qos_fuzz.c
index b71e945c5f..d3839bf999 100644
--- a/tests/qtest/fuzz/qos_fuzz.c
+++ b/tests/qtest/fuzz/qos_fuzz.c
@@ -180,6 +180,7 @@ static void walk_path(QOSGraphNode *orig_path, int len)
 
         fuzz_path_vec = path_vec;
     } else {
+        g_string_free(cmd_line, true);
         g_free(path_vec);
     }