1 files changed, 1 insertions, 0 deletions
diff --git a/string.c b/string.c
index 246599d050..c75bb1003c 100644
--- a/string.c
+++ b/string.c
@@ -6924,6 +6924,7 @@ rb_str_rpartition(VALUE str, VALUE sep)
 	    rb_raise(rb_eTypeError, "type mismatch: %s given",
 		     rb_obj_classname(sep));
 	}
+	sep = tmp;
 	pos = rb_str_sublen(str, pos);
 	pos = rb_str_rindex(str, sep, pos);
     }