diff --git a/compile.c b/compile.c
index 69545c87c7..7694b34bf8 100644
--- a/compile.c
+++ b/compile.c
@@ -1595,6 +1595,8 @@ iseq_insert_nop_between_end_and_cont(rb_iseq_t *iseq)
             }
         }
     }
+
+    RB_GC_GUARD(catch_table_ary);
 }
 
 static int