diff --git a/include/str.h b/include/str.h
index ea03ee3..baa260e 100644
--- a/include/str.h
+++ b/include/str.h
@@ -42,6 +42,24 @@ strcata(CHAR8 *dest, const CHAR8 *src)
 	return dest;
 }
 
+static inline
+__attribute__((unused))
+CHAR8 *
+strndupa(const CHAR8 * const src, const UINTN srcmax)
+{
+	UINTN len;
+	CHAR8 *news = NULL;
+
+	if (!src || !srcmax)
+		return news;
+
+	len = strnlena(src, srcmax);
+	news = AllocateZeroPool(len);
+	if (news)
+		strncpya(news, src, len);
+	return news;
+}
+
 static inline
 __attribute__((unused))
 CHAR8 *