diff --git a/libc/arch-x86/silvermont/string/sse2-memset-slm.S b/libc/arch-x86/silvermont/string/sse2-memset-slm.S
index 0718fa7..f5182ba 100644
--- a/libc/arch-x86/silvermont/string/sse2-memset-slm.S
+++ b/libc/arch-x86/silvermont/string/sse2-memset-slm.S
@@ -113,11 +113,12 @@
 #endif
 
 ENTRY(__memset_chk)
-  movl LEN(%esp), %ecx
-  cmpl %ecx, CHK_DST_LEN(%esp)
-  jbe memset
+  ENTRANCE
 
-  jmp __memset_chk_fail
+  movl LEN(%esp), %ecx
+  cmpl CHK_DST_LEN(%esp), %ecx
+  ja __memset_chk_fail
+  jmp L(memset_length_loaded)
 END(__memset_chk)
 
 	.section .text.sse2,"ax",@progbits
@@ -126,6 +127,7 @@
 	ENTRANCE
 
 	movl	LEN(%esp), %ecx
+L(memset_length_loaded):
 	cmp	$0, %ecx
 	ja	L(1byteormore)
 	SETRTNVAL