diff --git a/lib/parser.c b/lib/parser.c
index 3278958..0142ef2 100644
--- a/lib/parser.c
+++ b/lib/parser.c
@@ -327,10 +327,6 @@
  */
 char *match_strdup(const substring_t *s)
 {
-	size_t sz = s->to - s->from + 1;
-	char *p = kmalloc(sz, GFP_KERNEL);
-	if (p)
-		match_strlcpy(p, s, sz);
-	return p;
+	return kmemdup_nul(s->from, s->to - s->from, GFP_KERNEL);
 }
 EXPORT_SYMBOL(match_strdup);