diff --git a/libc/arch-x86_64/string/sse2-memmove-slm.S b/libc/arch-x86_64/string/sse2-memmove-slm.S
index 8b32680..b787385 100644
--- a/libc/arch-x86_64/string/sse2-memmove-slm.S
+++ b/libc/arch-x86_64/string/sse2-memmove-slm.S
@@ -79,18 +79,23 @@
 #endif
 
 #define CFI_PUSH(REG)		\
-	cfi_adjust_cfa_offset (4);		\
+	cfi_adjust_cfa_offset (8);		\
 	cfi_rel_offset (REG, 0)
 
 #define CFI_POP(REG)		\
-	cfi_adjust_cfa_offset (-4);		\
+	cfi_adjust_cfa_offset (-8);		\
 	cfi_restore (REG)
 
 #define PUSH(REG)	push REG;
 #define POP(REG)	pop REG;
 
-#define ENTRANCE	PUSH (%rbx);
-#define RETURN_END	POP (%rbx); ret
+#define ENTRANCE	\
+    PUSH (%rbx);    \
+    CFI_PUSH (%rbx);
+#define RETURN_END	\
+    POP (%rbx);     \
+    CFI_POP (%rbx); \
+    ret
 #define RETURN		RETURN_END;
 
 	.section .text.sse2,"ax",@progbits