1 files changed, 3 insertions, 0 deletions

diff --git a/src/testbed/testbed_api_testbed.c b/src/testbed/testbed_api_testbed.c
index 1b6656234..eaa1656ba 100644
--- a/src/testbed/testbed_api_testbed.c
+++ b/src/testbed/testbed_api_testbed.c
@@ -1366,6 +1366,9 @@ GNUNET_TESTBED_run (const char *host_filename,
       goto error_cleanup;
     }
     goto warn_ignore;
+  case GNUNET_TESTBED_TOPOLOGY_OPTION_END:
+    /* not allowed! */
+    GNUNET_assert (0);
   default:
   warn_ignore:
     /* Warn if OVERLAY_RANDOM_LINKS is present that it will be ignored */