diff --git a/common_x86_64.h b/common_x86_64.h
index 7b6d11f7d..19b0ac53c 100644
--- a/common_x86_64.h
+++ b/common_x86_64.h
@@ -425,6 +425,7 @@ REALNAME:
 #define ALIGN_2 .align 2
 #define ALIGN_3 .align 3
 #define ALIGN_4 .align 4
+#define ALIGN_5 .align 5
 #define ffreep	fstp
 #endif