diff --git a/include/asm-frv/pgtable.h b/include/asm-frv/pgtable.h
index 2687c77..114aefa 100644
--- a/include/asm-frv/pgtable.h
+++ b/include/asm-frv/pgtable.h
@@ -25,7 +25,7 @@
 #include <linux/slab.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
-struct mm_struct;
+#include <linux/sched.h>
 struct vm_area_struct;
 #endif