diff --git a/libc/arch-x86/atom/string/sse2-wcslen-atom.S b/libc/arch-x86/atom/string/sse2-wcslen-atom.S
index 6a6ad519e..2f10db450 100644
--- a/libc/arch-x86/atom/string/sse2-wcslen-atom.S
+++ b/libc/arch-x86/atom/string/sse2-wcslen-atom.S
@@ -65,21 +65,21 @@ name:	\
 ENTRY (wcslen)
 	mov	STR(%esp), %edx
 #endif
-	cmp	$0, (%edx)
+	cmpl	$0, (%edx)
 	jz	L(exit_tail0)
-	cmp	$0, 4(%edx)
+	cmpl	$0, 4(%edx)
 	jz	L(exit_tail1)
-	cmp	$0, 8(%edx)
+	cmpl	$0, 8(%edx)
 	jz	L(exit_tail2)
-	cmp	$0, 12(%edx)
+	cmpl	$0, 12(%edx)
 	jz	L(exit_tail3)
-	cmp	$0, 16(%edx)
+	cmpl	$0, 16(%edx)
 	jz	L(exit_tail4)
-	cmp	$0, 20(%edx)
+	cmpl	$0, 20(%edx)
 	jz	L(exit_tail5)
-	cmp	$0, 24(%edx)
+	cmpl	$0, 24(%edx)
 	jz	L(exit_tail6)
-	cmp	$0, 28(%edx)
+	cmpl	$0, 28(%edx)
 	jz	L(exit_tail7)
 
 	pxor	%xmm0, %xmm0