diff --git a/backend/genesys_gl841.c b/backend/genesys_gl841.c
index 94b2151ba..ec7f7b2b4 100644
--- a/backend/genesys_gl841.c
+++ b/backend/genesys_gl841.c
@@ -5428,7 +5428,8 @@ gl841_coarse_gain_calibration (Genesys_Device * dev, int dpi)
       gain[j] = 65535.0/max[j];
 
       if (dev->model->dac_type == DAC_CANONLIDE35 ||
-	  dev->model->dac_type == DAC_WOLFSON_XP300) {
+	  dev->model->dac_type == DAC_WOLFSON_XP300 ||
+	  dev->model->dac_type == DAC_WOLFSON_DSM600) {
 	  gain[j] *= 0.69;/*seems we don't get the real maximum. empirically derived*/
 	  if (283 - 208/gain[j] > 255) 
 	      dev->frontend.gain[j] = 255;