diff --git a/arch/blackfin/include/asm/hardirq.h b/arch/blackfin/include/asm/hardirq.h
index b6b19f1b9dab..717181a1749b 100644
--- a/arch/blackfin/include/asm/hardirq.h
+++ b/arch/blackfin/include/asm/hardirq.h
@@ -42,4 +42,6 @@ typedef struct {
 
 #define __ARCH_IRQ_EXIT_IRQS_DISABLED	1
 
+extern void ack_bad_irq(unsigned int irq);
+
 #endif
diff --git a/arch/blackfin/include/asm/irq.h b/arch/blackfin/include/asm/irq.h
index c3cc5cbb610d..291a9223adca 100644
--- a/arch/blackfin/include/asm/irq.h
+++ b/arch/blackfin/include/asm/irq.h
@@ -21,8 +21,6 @@
 #include <mach/irq.h>
 #include <asm/ptrace.h>
 
-extern void ack_bad_irq(unsigned int irq);
-
 static __inline__ int irq_canonicalize(int irq)
 {
 	return irq;