diff --git a/src/plugins/hs_apps/http_client_cli.c b/src/plugins/hs_apps/http_client_cli.c
index f44d4e1..8de9ff8 100644
--- a/src/plugins/hs_apps/http_client_cli.c
+++ b/src/plugins/hs_apps/http_client_cli.c
@@ -411,7 +411,7 @@
       vec_free (hcm->http_response);
       break;
     default:
-      clib_error_return (0, "unexpected event %d", event_type);
+      err = clib_error_return (0, "unexpected event %d", event_type);
       break;
     }