diff --git a/awusb/awusb.c b/awusb/awusb.c
index 16b3e2c..ca40da5 100644
--- a/awusb/awusb.c
+++ b/awusb/awusb.c
@@ -42,7 +42,7 @@
 #include <linux/ioctl.h>
 #include <linux/mutex.h> //?
 
-
+#include <linux/sched/signal.h>
 /*
  * Version Information
  */