1 files changed, 1 insertions, 1 deletions

diff --git a/src/testing/testing_api_cmd_netjail_stop_testsystem.c b/src/testing/testing_api_cmd_netjail_stop_testsystem.c
index d3754153d..33792f1b0 100644
--- a/src/testing/testing_api_cmd_netjail_stop_testsystem.c
+++ b/src/testing/testing_api_cmd_netjail_stop_testsystem.c
@@ -95,7 +95,7 @@ stop_testing_system_run (void *cls,
   struct GNUNET_HELPER_Handle **helper;
   const struct GNUNET_TESTING_Command *start_helper_cmd;
 
-  start_helper_cmd = GNUNET_TESTING_interpreter_lookup_command (NULL,
+  start_helper_cmd = GNUNET_TESTING_interpreter_lookup_command (is,
                                                                 shs->
                                                                 helper_start_label);
   GNUNET_TESTING_get_trait_helper_handles (start_helper_cmd,