1 files changed, 1 insertions, 1 deletions
diff --git a/string.c b/string.c
index 3bb6780e4b..1de91ff525 100644
--- a/string.c
+++ b/string.c
@@ -4243,7 +4243,7 @@ tr_trans(VALUE str, VALUE src, VALUE repl, int sflag)
 	enc = rb_enc_check(src, repl);
     }
     trsrc.p = RSTRING_PTR(src); trsrc.pend = trsrc.p + RSTRING_LEN(src);
-    if (RSTRING_LEN(str) > 1 &&
+    if (RSTRING_LEN(src) > 1 &&
 	rb_enc_ascget(trsrc.p, trsrc.pend, &l, enc) == '^' &&
 	trsrc.p + l < trsrc.pend) {
 	cflag = 1;