Index: src/libmpg123/dct36_x86_64.S
--- src/libmpg123/dct36_x86_64.S.orig
+++ src/libmpg123/dct36_x86_64.S
@@ -74,6 +74,7 @@ dct36_x86_64_sign:
 	ALIGN16
 	.globl ASM_NAME(dct36_x86_64)
 ASM_NAME(dct36_x86_64):
+	endbr64
 #ifdef IS_MSABI
 	push		%rbp
 	mov			%rsp, %rbp
