diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c
index bddca519dd5854a0fd3319e85d54d7e638514b47..e8feb142c9c9c660722cb154e32bae1d19ec3fed 100644
--- a/tools/perf/util/string.c
+++ b/tools/perf/util/string.c
@@ -322,12 +322,8 @@ char *strxfrchar(char *s, char from, char to)
  */
 char *ltrim(char *s)
 {
-	int len = strlen(s);
-
-	while (len && isspace(*s)) {
-		len--;
+	while (isspace(*s))
 		s++;
-	}
 
 	return s;
 }