diff --git a/py/gc.c b/py/gc.c
index 0a6b14bfef..0e1e4a7d32 100644
--- a/py/gc.c
+++ b/py/gc.c
@@ -768,7 +768,7 @@ void gc_dump_alloc_table(void) {
                 }
                 break;
             }
-            case AT_TAIL: c = 't'; break;
+            case AT_TAIL: c = '='; break;
             case AT_MARK: c = 'm'; break;
         }
         mp_printf(&mp_plat_print, "%c", c);