diff --git a/libc/arch-x86/atom/string/ssse3-wcscat-atom.S b/libc/arch-x86/atom/string/ssse3-wcscat-atom.S
index 17b0843..8a389a3 100644
--- a/libc/arch-x86/atom/string/ssse3-wcscat-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-wcscat-atom.S
@@ -98,13 +98,13 @@
 	mov	STR2(%esp), %ecx
 	lea	(%edi, %eax), %edx
 
-	cmp	$0, (%ecx)
+	cmpl	$0, (%ecx)
 	jz	L(Exit4)
-	cmp	$0, 4(%ecx)
+	cmpl	$0, 4(%ecx)
 	jz	L(Exit8)
-	cmp	$0, 8(%ecx)
+	cmpl	$0, 8(%ecx)
 	jz	L(Exit12)
-	cmp	$0, 12(%ecx)
+	cmpl	$0, 12(%ecx)
 	jz	L(Exit16)
 
 #undef RETURN
diff --git a/libc/arch-x86/atom/string/ssse3-wcscpy-atom.S b/libc/arch-x86/atom/string/ssse3-wcscpy-atom.S
index 8ba84bc..27cb61e 100644
--- a/libc/arch-x86/atom/string/ssse3-wcscpy-atom.S
+++ b/libc/arch-x86/atom/string/ssse3-wcscpy-atom.S
@@ -92,13 +92,13 @@
 	mov	STR1(%esp), %edx
 	mov	STR2(%esp), %ecx
 
-	cmp	$0, (%ecx)
+	cmpl	$0, (%ecx)
 	jz	L(ExitTail4)
-	cmp	$0, 4(%ecx)
+	cmpl	$0, 4(%ecx)
 	jz	L(ExitTail8)
-	cmp	$0, 8(%ecx)
+	cmpl	$0, 8(%ecx)
 	jz	L(ExitTail12)
-	cmp	$0, 12(%ecx)
+	cmpl	$0, 12(%ecx)
 	jz	L(ExitTail16)
 
 	PUSH	(%edi)