diff --git a/node.c b/node.c
index d844473988..64e2d8f43d 100644
--- a/node.c
+++ b/node.c
@@ -1269,11 +1269,13 @@ mark_ast_value(void *ctx, NODE * node)
         {
             struct rb_ary_pattern_info *apinfo = node->nd_apinfo;
             rb_gc_mark(apinfo->imemo);
+            break;
         }
         case NODE_ARGS:
         {
             struct rb_args_info *args = node->nd_ainfo;
             rb_gc_mark(args->imemo);
+            break;
         }
         case NODE_LIT:
         case NODE_STR: