diff --git a/drivers/staging/comedi/drivers/comedi_rt_timer.c b/drivers/staging/comedi/drivers/comedi_rt_timer.c
index 5d79c545ad75..c19ca8d3fb9e 100644
--- a/drivers/staging/comedi/drivers/comedi_rt_timer.c
+++ b/drivers/staging/comedi/drivers/comedi_rt_timer.c
@@ -104,6 +104,8 @@ static inline RTIME nano2count(long long ns)
 #define start_rt_timer(x)
 #define stop_rt_timer()
 
+#define comedi_rt_task_context_t	int
+
 #endif
 #ifdef CONFIG_COMEDI_RTAI
 #include <rtai.h>