diff --git a/common/jpeg/simd/jdsamss2-64.asm b/common/jpeg/simd/jdsamss2-64.asm
index 143a97a..8521491 100644
--- a/common/jpeg/simd/jdsamss2-64.asm
+++ b/common/jpeg/simd/jdsamss2-64.asm
@@ -662,3 +662,7 @@
 	pop	rbx
 	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