diff --git a/vlib/builtin/string.v b/vlib/builtin/string.v
index 85090c3510..7b79e13b7c 100644
--- a/vlib/builtin/string.v
+++ b/vlib/builtin/string.v
@@ -2382,7 +2382,7 @@ pub fn (a []string) join(sep string) string {
 	return res
 }
 
-// join joins a string array into a string using a `\n` newline delimiter.
+// join_lines joins a string array into a string using a `\n` newline delimiter.
 @[inline]
 pub fn (s []string) join_lines() string {
 	return s.join('\n')