diff --git a/common/jpeg/simd/jdsamss2.asm b/common/jpeg/simd/jdsamss2.asm
index 7d787f1..b5c863b 100644
--- a/common/jpeg/simd/jdsamss2.asm
+++ b/common/jpeg/simd/jdsamss2.asm
@@ -724,3 +724,6 @@
 	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