diff --git a/libc/arch-x86/string/strlen.S b/libc/arch-x86/string/strlen.S
index 4f04ffc..527e36a 100644
--- a/libc/arch-x86/string/strlen.S
+++ b/libc/arch-x86/string/strlen.S
@@ -18,3 +18,4 @@
 	leal	-1(%ecx),%eax		/* and subtracting one */
 	popl	%edi
 	ret
+END(strlen)