diff --git a/common/jpeg/simd/jcsamss2.asm b/common/jpeg/simd/jcsamss2.asm
index 98e97da..818e911 100644
--- a/common/jpeg/simd/jcsamss2.asm
+++ b/common/jpeg/simd/jcsamss2.asm
@@ -346,3 +346,6 @@
 	pop	ebp
 	ret
 
+; For some reason, the OS X linker does not honor the request to align the
+; segment unless we do this.
+	align	16