diff --git a/zenidrv-g203-lightsync b/zenidrv-g203-lightsync
index cc30355..a579462 100755
--- a/zenidrv-g203-lightsync
+++ b/zenidrv-g203-lightsync
@@ -213,15 +213,19 @@ while [ ${showMenu} -eq 0 ] ; do
     fi
   elif [ "${opcion}" == "${imagesPath}/mouse-dpi.png" ] ; then
     dpi_number=$(zenity --entry --title "Set DPI (from 50 to 8000)" --window-icon=${iconPath} --text "Enter DPI number (from 50 to 8000):" --entry-text "800")
-    sleep 2 | zenity --progress --title "zenidrv-g203-lightsync ${VERSION} (${M_DATE})" --text "Setting DPI to ${dpi_number}" \
-    --window-icon=${iconPath} --pulsate --no-cancel --auto-close
-    g203-led.py lightsync dpi ${dpi_number}
-    device_error=$?
-    if [ ${device_error} -eq 0 ] ; then
+    if [ -z ${dpi_number} ] ; then
       echo > /dev/null
     else
-      zenity --title "zenidrv-g203-lightsync ${VERSION} ($M_DATE)" --error --window-icon=${iconPath} --width=280 \
-      --text "Device not found or connected"
+      sleep 2 | zenity --progress --title "zenidrv-g203-lightsync ${VERSION} (${M_DATE})" --text "Setting DPI to ${dpi_number}" \
+      --window-icon=${iconPath} --pulsate --no-cancel --auto-close
+      g203-led.py lightsync dpi ${dpi_number}
+      device_error=$?
+      if [ ${device_error} -eq 0 ] ; then
+        echo > /dev/null
+      else
+        zenity --title "zenidrv-g203-lightsync ${VERSION} ($M_DATE)" --error --window-icon=${iconPath} --width=280 \
+        --text "Device not found or connected"
+      fi
     fi
   elif [ "${opcion}" == "${imagesPath}/light-off.png" ] ; then
     sleep 2 | zenity --progress --title "zenidrv-g203-lightsync ${VERSION} (${M_DATE})" --text "Turning off the light on the mouse" \
diff --git a/zenidrv-g203-prodigy b/zenidrv-g203-prodigy
index e31a484..026765a 100755
--- a/zenidrv-g203-prodigy
+++ b/zenidrv-g203-prodigy
@@ -191,15 +191,19 @@ while [ ${showMenu} -eq 0 ] ; do
     fi
   elif [ "${opcion}" == "${imagesPath}/mouse-dpi.png" ] ; then
     dpi_number=$(zenity --entry --title "Set DPI (from 200 to 8000)" --window-icon=${iconPath} --text "Enter DPI number (from 200 to 8000):" --entry-text "800")
-    sleep 2 | zenity --progress --title "zenidrv-g203-prodigy ${VERSION} (${M_DATE})" --text "Setting DPI to ${dpi_number}" \
-    --window-icon=${iconPath} --pulsate --no-cancel --auto-close
-    g203-led.py dpi ${dpi_number}
-    device_error=$?
-    if [ ${device_error} -eq 0 ] ; then
+    if [ -z ${dpi_number} ] ; then
       echo > /dev/null
     else
-      zenity --title "zenidrv-g203-prodigy ${VERSION} ($M_DATE)" --error --window-icon=${iconPath} --width=280 \
-      --text "Device not found or connected"
+      sleep 2 | zenity --progress --title "zenidrv-g203-prodigy ${VERSION} (${M_DATE})" --text "Setting DPI to ${dpi_number}" \
+      --window-icon=${iconPath} --pulsate --no-cancel --auto-close
+      g203-led.py dpi ${dpi_number}
+      device_error=$?
+      if [ ${device_error} -eq 0 ] ; then
+        echo > /dev/null
+      else
+        zenity --title "zenidrv-g203-prodigy ${VERSION} ($M_DATE)" --error --window-icon=${iconPath} --width=280 \
+        --text "Device not found or connected"
+      fi
     fi
   elif [ "${opcion}" == "${imagesPath}/light-off.png" ] ; then
     sleep 2 | zenity --progress --title "zenidrv-g203-prodigy ${VERSION} (${M_DATE})" --text "Turning off the light on the mouse" \