Index: simd/x86_64/jcgryext-sse2.asm
--- simd/x86_64/jcgryext-sse2.asm.orig
+++ simd/x86_64/jcgryext-sse2.asm
@@ -40,6 +40,7 @@
     GLOBAL_FUNCTION(jsimd_rgb_gray_convert_sse2)
 
 EXTN(jsimd_rgb_gray_convert_sse2):
+    _endbr64
     push        rbp
     mov         rbp, rsp
     push        r15
