diff --git a/doc/effective_go.html b/doc/effective_go.html
index 694f05d1019526b6ccd6cd8bc0784bfa11324d62..3ab05fc1cf2611f074fbb0f97e2864656bfd4d28 100644
--- a/doc/effective_go.html
+++ b/doc/effective_go.html
@@ -1441,7 +1441,7 @@ then make the receiver for the method a value of that type.
 <pre>
 type ByteSlice []byte
 
-func (slice ByteSlice) Append(data []byte) []slice {
+func (slice ByteSlice) Append(data []byte) []byte {
 	// Body exactly the same as above
 }
 </pre>