diff --git a/src/system/libroot/posix/string/strlen.c b/src/system/libroot/posix/string/strlen.c
new file mode 100644
index 0000000000..08e0d9a037
--- /dev/null
+++ b/src/system/libroot/posix/string/strlen.c
@@ -0,0 +1,20 @@
+/* 
+** Copyright 2001, Travis Geiselbrecht. All rights reserved.
+** Distributed under the terms of the NewOS License.
+*/
+
+#include <sys/types.h>
+#include <string.h>
+
+
+size_t
+strlen(char const *s)
+{
+	size_t i = 0;
+
+	while (s[i]) {
+		i += 1;
+	}
+
+	return i;
+}