diff --git a/babeld/babel_zebra.c b/babeld/babel_zebra.c
index 1890291..eced995 100644
--- a/babeld/babel_zebra.c
+++ b/babeld/babel_zebra.c
@@ -298,6 +298,7 @@
         if (strncmp(debug_type[i].str, argv[0],
                     debug_type[i].str_min_len) == 0) {
             debug &= ~debug_type[i].type;
+            return CMD_SUCCESS;
         }
     }