diff --git a/arch/arm/include/asm/traps.h b/arch/arm/include/asm/traps.h
index f90756dc16dc416f8a67bd9029abad857585788f..5b29a66736250e71d9a4ee24cfb9e0cd341ea14f 100644
--- a/arch/arm/include/asm/traps.h
+++ b/arch/arm/include/asm/traps.h
@@ -3,6 +3,9 @@
 
 #include <linux/list.h>
 
+struct pt_regs;
+struct task_struct;
+
 struct undef_hook {
 	struct list_head node;
 	u32 instr_mask;