diff --git a/cmd/irq.c b/cmd/irq.c
index da223b4..58483d0 100644
--- a/cmd/irq.c
+++ b/cmd/irq.c
@@ -6,6 +6,7 @@
 #include <config.h>
 #include <command.h>
 #include <irq_func.h>
+#include <linux/string.h>
 
 static int do_interrupts(struct cmd_tbl *cmdtp, int flag, int argc,
 			 char *const argv[])