diff --git a/numass-control/gun/build.gradle b/numass-control/gun/build.gradle
index adb7e3e8..a9547a84 100644
--- a/numass-control/gun/build.gradle
+++ b/numass-control/gun/build.gradle
@@ -14,7 +14,14 @@
  *  limitations under the License.
  */
 
-apply plugin: 'application'
+plugins {
+    id 'application'
+    id 'org.openjfx.javafxplugin' version '0.0.5'
+}
+
+javafx {
+    modules = [ 'javafx.controls' ]
+}
 
 version = "0.1.0"
 
diff --git a/numass-control/gun/src/main/kotlin/inr/numass/control/gun/EGunView.kt b/numass-control/gun/src/main/kotlin/inr/numass/control/gun/EGunView.kt
index c6e743e5..3be29210 100644
--- a/numass-control/gun/src/main/kotlin/inr/numass/control/gun/EGunView.kt
+++ b/numass-control/gun/src/main/kotlin/inr/numass/control/gun/EGunView.kt
@@ -47,7 +47,9 @@ class EGunView(val gun: EGun) : View() {
             vbox {
                 gun.sources.forEach { source ->
                     hbox {
-                        label(source.name)
+                        label(source.name){
+                            minWidth = 100.0
+                        }
                         separator(Orientation.VERTICAL)
 
                         indicator {
@@ -60,6 +62,7 @@ class EGunView(val gun: EGun) : View() {
                         textfield {
 
                         }
+
                         separator(Orientation.VERTICAL)
                         label("V: ")
                         label(voltageProperty)
diff --git a/numass-control/gun/src/main/kotlin/inr/numass/control/gun/IT6800Device.kt b/numass-control/gun/src/main/kotlin/inr/numass/control/gun/IT6800Device.kt
index 552f092e..8041756e 100644
--- a/numass-control/gun/src/main/kotlin/inr/numass/control/gun/IT6800Device.kt
+++ b/numass-control/gun/src/main/kotlin/inr/numass/control/gun/IT6800Device.kt
@@ -34,7 +34,9 @@ import kotlin.experimental.and
 
 
 class IT6800Device(context: Context, meta: Meta) : AbstractDevice(context, meta) {
-    private val portHelper = PortHelper(this)
+    private val portHelper = PortHelper(this).apply {
+        debug = true
+    }
 
     private var monitorJob: Job? = null