diff --git a/sound/drivers/pcsp/pcsp_input.c b/sound/drivers/pcsp/pcsp_input.c
index b874b0ad99cd..0ecf8a453e01 100644
--- a/sound/drivers/pcsp/pcsp_input.c
+++ b/sound/drivers/pcsp/pcsp_input.c
@@ -16,6 +16,7 @@
 #include <linux/input.h>
 #include <asm/io.h>
 #include "pcsp.h"
+#include "pcsp_input.h"
 
 static void pcspkr_do_sound(unsigned int count)
 {