Index: simd/x86_64/jcgryext-avx2.asm
--- simd/x86_64/jcgryext-avx2.asm.orig
+++ simd/x86_64/jcgryext-avx2.asm
@@ -41,6 +41,7 @@
     GLOBAL_FUNCTION(jsimd_rgb_gray_convert_avx2)
 
 EXTN(jsimd_rgb_gray_convert_avx2):
+    _endbr64
     push        rbp
     mov         rbp, rsp
     push        r15
