diff --git a/drivers/staging/comedi/drivers/das16.c b/drivers/staging/comedi/drivers/das16.c
index 009c074b664b..577e2a842845 100644
--- a/drivers/staging/comedi/drivers/das16.c
+++ b/drivers/staging/comedi/drivers/das16.c
@@ -86,7 +86,6 @@ www.measurementcomputing.com
 #include "8255.h"
 #include "comedi_fc.h"
 
-#define DAS16_SIZE 20		/*  number of ioports */
 #define DAS16_DMA_SIZE 0xff00	/*  size in bytes of allocated dma buffer */
 
 /*