diff --git a/common/jpeg/simd/jcqnts2f-64.asm b/common/jpeg/simd/jcqnts2f-64.asm
index 51d6307..e09387c 100644
--- a/common/jpeg/simd/jcqnts2f-64.asm
+++ b/common/jpeg/simd/jcqnts2f-64.asm
@@ -150,3 +150,7 @@
 	uncollect_args
 	pop	rbp
 	ret
+
+; For some reason, the OS X linker does not honor the request to align the
+; segment unless we do this.
+	align	16