diff --git a/drivers/staging/comedi/drivers/pcl711.c b/drivers/staging/comedi/drivers/pcl711.c
index e1cdb365fed4..80d6a4c9dd80 100644
--- a/drivers/staging/comedi/drivers/pcl711.c
+++ b/drivers/staging/comedi/drivers/pcl711.c
@@ -133,8 +133,8 @@ static const int i8253_osc_base = 500;	/* 2 Mhz */
 
 struct pcl711_board {
 	const char *name;
-	int is_pcl711b;
-	int is_8112;
+	unsigned int is_pcl711b:1;
+	unsigned int is_8112:1;
 	int n_aichan;
 	int n_aochan;
 	int maxirq;