diff --git a/arch/powerpc/boot/ps3-head.S b/arch/powerpc/boot/ps3-head.S
index 1a6d64a68df5..a55c2735f759 100644
--- a/arch/powerpc/boot/ps3-head.S
+++ b/arch/powerpc/boot/ps3-head.S
@@ -20,6 +20,8 @@
 
 #include "ppc_asm.h"
 
+	.machine "ppc64"
+
 	.text
 
 /*
diff --git a/arch/powerpc/boot/ps3-hvcall.S b/arch/powerpc/boot/ps3-hvcall.S
index c8b7df3210d1..585965f7e6a8 100644
--- a/arch/powerpc/boot/ps3-hvcall.S
+++ b/arch/powerpc/boot/ps3-hvcall.S
@@ -20,6 +20,8 @@
 
 #include "ppc_asm.h"
 
+	.machine "ppc64"
+
 /*
  * The PS3 hypervisor uses a 64 bit "C" language calling convention.
  * The routines here marshal arguments between the 32 bit wrapper