diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 4035cad..da09ba0 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -21,6 +21,7 @@
 #include <asm/machdep.h>
 #include <asm/abs_addr.h>
 #include <asm/system.h>
+#include <asm/smp.h>
 
 static int numa_enabled = 1;