diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 2d13f90476bd..490e39c8d8f6 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -26,6 +26,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/uaccess.h>
+#include <linux/slab.h>
 #include <asm/sparsemem.h>
 #include <asm/prom.h>
 #include <asm/smp.h>