1 files changed, 1 insertions, 0 deletions
diff --git a/numeric.c b/numeric.c
index 7c78767487..45a9ce025e 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1860,6 +1860,7 @@ int_chr(int argc, VALUE *argv, VALUE num)
 	break;
     }
     enc = rb_to_encoding(argv[0]);
+    if (!enc) enc = rb_default_encoding();
     if (i < 0 || (n = rb_enc_codelen(i, enc)) <= 0) goto out_of_range;
     str = rb_enc_str_new(0, n, enc);
     rb_enc_mbcput(i, RSTRING_PTR(str), enc);