diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index db43b58..0053add 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -360,7 +360,7 @@
 /* map softirq index to softirq name. update 'softirq_to_name' in
  * kernel/softirq.c when adding a new softirq.
  */
-extern char *softirq_to_name[NR_SOFTIRQS];
+extern const char * const softirq_to_name[NR_SOFTIRQS];
 
 /* softirq mask and active fields moved to irq_cpustat_t in
  * asm/hardirq.h to get better cache usage.  KAO