Index: simd/x86_64/jcsample-sse2.asm
--- simd/x86_64/jcsample-sse2.asm.orig
+++ simd/x86_64/jcsample-sse2.asm
@@ -43,6 +43,7 @@
     GLOBAL_FUNCTION(jsimd_h2v1_downsample_sse2)
 
 EXTN(jsimd_h2v1_downsample_sse2):
+    _endbr64
     push        rbp
     mov         rbp, rsp
     collect_args 6
@@ -187,6 +188,7 @@ EXTN(jsimd_h2v1_downsample_sse2):
     GLOBAL_FUNCTION(jsimd_h2v2_downsample_sse2)
 
 EXTN(jsimd_h2v2_downsample_sse2):
+    _endbr64
     push        rbp
     mov         rbp, rsp
     collect_args 6
