diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c
index 053bc5090530..ad0faf5c2fad 100644
--- a/drivers/staging/comedi/drivers/usbdux.c
+++ b/drivers/staging/comedi/drivers/usbdux.c
@@ -513,7 +513,7 @@ static void usbduxsub_ao_isoc_irq(struct urb *urb)
 			dev_err(dev->class_dev,
 				"ao urb resubm failed in int-cont. ret=%d",
 				ret);
-			if (ret == EL2NSYNC)
+			if (ret == -EL2NSYNC)
 				dev_err(dev->class_dev,
 					"buggy USB host controller or bug in IRQ handling!\n");
 
@@ -1294,7 +1294,7 @@ static void usbduxsub_pwm_irq(struct urb *urb)
 			dev_err(dev->class_dev,
 				"pwm urb resubm failed in int-cont. ret=%d",
 				ret);
-			if (ret == EL2NSYNC)
+			if (ret == -EL2NSYNC)
 				dev_err(dev->class_dev,
 					"buggy USB host controller or bug in IRQ handling!\n");