1 files changed, 2 insertions, 1 deletions
diff --git a/iseq.c b/iseq.c
index bd7be02c4f..b636ae0942 100644
--- a/iseq.c
+++ b/iseq.c
@@ -1101,7 +1101,8 @@ cdhash_each(VALUE key, VALUE value, VALUE ary)
 static VALUE
 iseq_data_to_ary(rb_iseq_t *iseq)
 {
-    long i, pos, ti;
+    long i, ti;
+    unsigned int pos;
     unsigned int line = 0;
     VALUE *seq;