1 files changed, 1 insertions, 0 deletions
diff --git a/variable.c b/variable.c
index fbb0117..ed5bd84 100644
--- a/variable.c
+++ b/variable.c
@@ -647,6 +647,7 @@ rb_f_untrace_var(argc, argv)
     struct trace_var *trace;
     st_data_t data;
 
+    rb_secure(4);
     rb_scan_args(argc, argv, "11", &var, &cmd);
     id = rb_to_id(var);
     if (!st_lookup(rb_global_tbl, id, &data)) {