diff --git a/backend/genesys_gl124.cc b/backend/genesys_gl124.cc
index 55130bc93..89380d119 100644
--- a/backend/genesys_gl124.cc
+++ b/backend/genesys_gl124.cc
@@ -2187,7 +2187,7 @@ static void gl124_send_shading_data(Genesys_Device* dev, const Genesys_Sensor& s
   DBG( DBG_io2, "%s: STRPIXEL=%d, ENDPIXEL=%d, PIXELS=%d, SEGCNT=%d\n",__func__,strpixel,endpixel,endpixel-strpixel,segcnt);
 
   /* compute deletion factor */
-  sanei_genesys_get_double(&dev->reg,REG_DPISET,&dpiset);
+    dpiset = dev->reg.get16(REG_DPISET);
     dpihw = sensor.get_register_hwdpi(dpiset);
   factor=dpihw/dpiset;
   DBG( DBG_io2, "%s: factor=%d\n",__func__,factor);
diff --git a/backend/genesys_gl841.cc b/backend/genesys_gl841.cc
index c376fe903..75a9394b2 100644
--- a/backend/genesys_gl841.cc
+++ b/backend/genesys_gl841.cc
@@ -1600,9 +1600,9 @@ static void gl841_init_optical_regs_scan(Genesys_Device* dev, const Genesys_Sens
     if (flags & OPTICAL_FLAG_ENABLE_LEDADD)
       {
         r->value |= REG87_LEDADD;
-	sanei_genesys_get_double (reg, REG_EXPR, &expr);
-	sanei_genesys_get_double (reg, REG_EXPG, &expg);
-	sanei_genesys_get_double (reg, REG_EXPB, &expb);
+        expr = reg->get16(REG_EXPR);
+        expg = reg->get16(REG_EXPG);
+        expb = reg->get16(REG_EXPB);
 
 	/* use minimal exposure for best image quality */
 	expavg = expg;
@@ -4562,13 +4562,13 @@ static void gl841_send_shading_data(Genesys_Device* dev, const Genesys_Sensor& s
 
   /* data is whole line, we extract only the part for the scanned area */
   length = (uint32_t) (size / 3);
-  sanei_genesys_get_double(&dev->reg,REG_STRPIXEL,&strpixel);
-  sanei_genesys_get_double(&dev->reg,REG_ENDPIXEL,&endpixel);
+    strpixel = dev->reg.get16(REG_STRPIXEL);
+    endpixel = dev->reg.get16(REG_ENDPIXEL);
   DBG(DBG_io2, "%s: STRPIXEL=%d, ENDPIXEL=%d, PIXELS=%d\n", __func__, strpixel, endpixel,
       endpixel-strpixel);
 
   /* compute deletion/average factor */
-  sanei_genesys_get_double(&dev->reg,REG_DPISET,&dpiset);
+    dpiset = dev->reg.get16(REG_DPISET);
   dpihw = gl841_get_dpihw(dev);
   unsigned ccd_size_divisor = dev->current_setup.ccd_size_divisor;
   factor=dpihw/dpiset;
diff --git a/backend/genesys_gl843.cc b/backend/genesys_gl843.cc
index 56a8fbd0a..c86b27554 100644
--- a/backend/genesys_gl843.cc
+++ b/backend/genesys_gl843.cc
@@ -2080,8 +2080,8 @@ static void gl843_begin_scan(Genesys_Device* dev, const Genesys_Sensor& sensor,
     DBG_HELPER(dbg);
   uint16_t dpiset, dpihw;
 
-  /* get back the target dpihw */
-  sanei_genesys_get_double (reg, REG_DPISET, &dpiset);
+    // get back the target dpihw
+    dpiset = reg->get16(REG_DPISET);
     dpihw = sensor.get_register_hwdpi(dpiset);
 
   /* set up GPIO for scan */
@@ -2558,7 +2558,6 @@ static void gl843_init_regs_for_shading(Genesys_Device* dev, const Genesys_Senso
 {
     DBG_HELPER(dbg);
   int move, resolution, dpihw, factor;
-  uint16_t strpixel;
 
   /* initial calibration reg values */
   regs = dev->reg;
@@ -2646,8 +2645,6 @@ static void gl843_init_regs_for_shading(Genesys_Device* dev, const Genesys_Senso
   dev->calib_total_bytes_to_read = dev->read_bytes_left;
 
   dev->scanhead_position_in_steps += dev->calib_lines + move;
-  sanei_genesys_get_double(&regs,REG_STRPIXEL,&strpixel);
-  DBG(DBG_info, "%s: STRPIXEL=%d\n", __func__, strpixel);
 
     dev->write_registers(regs);
 }
@@ -3863,15 +3860,15 @@ static void gl843_send_shading_data(Genesys_Device* dev, const Genesys_Sensor& s
       /* recompute STRPIXEL used shading calibration so we can
        * compute offset within data for SHDAREA case */
       r = sanei_genesys_get_address(&dev->reg, REG18);
-      sanei_genesys_get_double(&dev->reg,REG_DPISET,&dpiset);
+        dpiset = dev->reg.get16(REG_DPISET);
         factor = sensor.optical_res / sensor.get_register_hwdpi(dpiset);
 
       /* start coordinate in optical dpi coordinates */
       startx = (sensor.dummy_pixel / sensor.ccd_pixels_per_system_pixel()) / factor;
 
       /* current scan coordinates */
-      sanei_genesys_get_double(&dev->reg,REG_STRPIXEL,&strpixel);
-      sanei_genesys_get_double(&dev->reg,REG_ENDPIXEL,&endpixel);
+        strpixel = dev->reg.get16(REG_STRPIXEL);
+        endpixel = dev->reg.get16(REG_ENDPIXEL);
 
       if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
         {
diff --git a/backend/genesys_gl846.cc b/backend/genesys_gl846.cc
index f993c5814..fc6932274 100644
--- a/backend/genesys_gl846.cc
+++ b/backend/genesys_gl846.cc
@@ -1916,7 +1916,6 @@ static void gl846_send_shading_data(Genesys_Device* dev, const Genesys_Sensor& s
     DBG_HELPER_ARGS(dbg, "writing %d bytes of shading data", size);
   uint32_t addr, length, i, x, factor, pixels;
   uint32_t dpiset, dpihw, strpixel, endpixel;
-  uint16_t tempo;
   uint32_t lines, channels;
   uint8_t val,*ptr,*src;
 
@@ -1927,14 +1926,11 @@ static void gl846_send_shading_data(Genesys_Device* dev, const Genesys_Sensor& s
      write(0x10068000,0x00000dd8)
    */
   length = (uint32_t) (size / 3);
-  sanei_genesys_get_double(&dev->reg,REG_STRPIXEL,&tempo);
-  strpixel=tempo;
-  sanei_genesys_get_double(&dev->reg,REG_ENDPIXEL,&tempo);
-  endpixel=tempo;
+    strpixel = dev->reg.get16(REG_STRPIXEL);
+    endpixel = dev->reg.get16(REG_ENDPIXEL);
 
   /* compute deletion factor */
-  sanei_genesys_get_double(&dev->reg,REG_DPISET,&tempo);
-  dpiset=tempo;
+    dpiset = dev->reg.get16(REG_DPISET);
   DBG(DBG_io2, "%s: STRPIXEL=%d, ENDPIXEL=%d, PIXELS=%d, DPISET=%d\n", __func__, strpixel, endpixel,
       endpixel-strpixel, dpiset);
     dpihw = sensor.get_register_hwdpi(dpiset);
diff --git a/backend/genesys_gl847.cc b/backend/genesys_gl847.cc
index 2f2fdea07..48e61950a 100644
--- a/backend/genesys_gl847.cc
+++ b/backend/genesys_gl847.cc
@@ -1968,7 +1968,6 @@ static void gl847_send_shading_data(Genesys_Device* dev, const Genesys_Sensor& s
     DBG_HELPER_ARGS(dbg, "writing %d bytes of shading data", size);
   uint32_t addr, length, i, x, factor, pixels;
   uint32_t dpiset, dpihw, strpixel, endpixel;
-  uint16_t tempo;
   uint32_t lines, channels;
   uint8_t val,*ptr,*src;
 
@@ -1979,14 +1978,11 @@ static void gl847_send_shading_data(Genesys_Device* dev, const Genesys_Sensor& s
      write(0x10068000,0x00000dd8)
    */
   length = (uint32_t) (size / 3);
-  sanei_genesys_get_double(&dev->reg,REG_STRPIXEL,&tempo);
-  strpixel=tempo;
-  sanei_genesys_get_double(&dev->reg,REG_ENDPIXEL,&tempo);
-  endpixel=tempo;
+    strpixel = dev->reg.get16(REG_STRPIXEL);
+    endpixel = dev->reg.get16(REG_ENDPIXEL);
 
   /* compute deletion factor */
-  sanei_genesys_get_double(&dev->reg,REG_DPISET,&tempo);
-  dpiset=tempo;
+    dpiset = dev->reg.get16(REG_DPISET);
   DBG(DBG_io2, "%s: STRPIXEL=%d, ENDPIXEL=%d, PIXELS=%d, DPISET=%d\n", __func__, strpixel, endpixel,
       endpixel-strpixel, dpiset);
     dpihw = sensor.get_register_hwdpi(dpiset);
diff --git a/backend/genesys_low.h b/backend/genesys_low.h
index cf62fbd26..44ce449ae 100644
--- a/backend/genesys_low.h
+++ b/backend/genesys_low.h
@@ -573,11 +573,6 @@ inline void sanei_genesys_set_triple(Genesys_Register_Set* regs, uint16_t addr,
     regs->set24(addr, value);
 }
 
-inline void sanei_genesys_get_double(Genesys_Register_Set* regs, uint16_t addr, uint16_t* value)
-{
-    *value = regs->get16(addr);
-}
-
 inline void sanei_genesys_get_triple(Genesys_Register_Set* regs, uint16_t addr, uint32_t* value)
 {
     *value = regs->get24(addr);