1 files changed, 1 insertions, 1 deletions
diff --git a/iseq.c b/iseq.c
index 2872d4f131..2bfdf7c9ed 100644
--- a/iseq.c
+++ b/iseq.c
@@ -1617,7 +1617,7 @@ ruby_node_name(int node)
 static VALUE
 register_label(struct st_table *table, unsigned long idx)
 {
-    VALUE sym = rb_str_dynamic_intern(rb_sprintf("label_%lu", idx));
+    VALUE sym = rb_str_intern(rb_sprintf("label_%lu", idx));
     st_insert(table, idx, sym);
     return sym;
 }