diff --git a/src/bytes/bytes.go b/src/bytes/bytes.go
index d3e01c3..926f65c 100644
--- a/src/bytes/bytes.go
+++ b/src/bytes/bytes.go
@@ -1260,7 +1260,7 @@
 // Cut slices s around the first instance of sep,
 // returning the text before and after sep.
 // The found result reports whether sep appears in s.
-// If sep does not appear in s, cut returns s, "", false.
+// If sep does not appear in s, cut returns s, nil, false.
 //
 // Cut returns slices of the original slice s, not copies.
 func Cut(s, sep []byte) (before, after []byte, found bool) {