diff --git a/UI/Templates/PreferencesUI/UIxPreferences.wox b/UI/Templates/PreferencesUI/UIxPreferences.wox
index 545779810..37db15b87 100644
--- a/UI/Templates/PreferencesUI/UIxPreferences.wox
+++ b/UI/Templates/PreferencesUI/UIxPreferences.wox
@@ -645,6 +645,7 @@
               <div flex-offset="5">
                 <md-radio-group
                     layout="row" layout-align="start center"
+                    ng-change="app.onMailAutoMarkAsReadDelay()"
                     ng-model="app.preferences.defaults.SOGoMailAutoMarkAsReadMode"
                     ng-disabled="!app.preferences.defaults.SOGoMailAutoMarkAsReadEnabled">
                   <md-radio-button value="immediate"><var:string label:value="Immediately on display"/></md-radio-button>
diff --git a/UI/WebServerResources/js/Preferences/PreferencesController.js b/UI/WebServerResources/js/Preferences/PreferencesController.js
index 05c995b49..fbfbdaa71 100644
--- a/UI/WebServerResources/js/Preferences/PreferencesController.js
+++ b/UI/WebServerResources/js/Preferences/PreferencesController.js
@@ -25,7 +25,10 @@
         $mdConstant.KEY_CODE.COMMA,
         $mdConstant.KEY_CODE.SEMICOLON
       ];
-      this.mailAutoMarkAsReadDelay = Preferences.defaults.SOGoMailAutoMarkAsReadMode == 'delay' ? Math.max(1, Preferences.defaults.SOGoMailAutoMarkAsReadDelay) : 5;
+      if (Preferences.defaults.SOGoMailAutoMarkAsReadMode == 'delay')
+        this.mailAutoMarkAsReadDelay = Math.max(1, this.preferences.defaults.SOGoMailAutoMarkAsReadDelay);
+      else
+        this.mailAutoMarkAsReadDelay = 5;
 
       // Set alternate avatar in User service
       if (Preferences.defaults.SOGoAlternateAvatar)