1 files changed, 1 insertions, 1 deletions
diff --git a/vm_core.h b/vm_core.h
index f4b3c3e295..a315f51b3d 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -335,7 +335,7 @@ struct rb_iseq_constant_body {
     const ID *local_table;		/* must free */
 
     /* catch table */
-    struct iseq_catch_table *catch_table;
+    const struct iseq_catch_table *catch_table;
 
     /* for child iseq */
     const struct rb_iseq_struct *parent_iseq;