diff --git a/res/gui/app.qrc b/res/gui/app.qrc
index 25db31155..fcf8d639e 100644
--- a/res/gui/app.qrc
+++ b/res/gui/app.qrc
@@ -7,7 +7,7 @@
         <file>icons/256x256/app.ico</file>
         <file>image/logo-light.png</file>
         <file>image/logo-dark.png</file>
-        <file>icons/16x16/padlock.png</file>
+        <file>icons/64x64/padlock.png</file>
         <file>icons/64x64/tray-dark.png</file>
         <file>icons/64x64/tray-light.png</file>
         <file>image/welcome.png</file>
diff --git a/res/gui/icons/16x16/padlock.png b/res/gui/icons/16x16/padlock.png
deleted file mode 100644
index e313e97e9..000000000
Binary files a/res/gui/icons/16x16/padlock.png and /dev/null differ
diff --git a/res/gui/icons/64x64/padlock.png b/res/gui/icons/64x64/padlock.png
new file mode 100644
index 000000000..55909fe94
Binary files /dev/null and b/res/gui/icons/64x64/padlock.png differ
diff --git a/src/gui/src/MainWindowBase.ui b/src/gui/src/MainWindowBase.ui
index 14f896bb9..4579618de 100644
--- a/src/gui/src/MainWindowBase.ui
+++ b/src/gui/src/MainWindowBase.ui
@@ -501,9 +501,24 @@
          <string/>
         </property>
         <property name="pixmap">
-         <pixmap resource="../../../../res/gui/app.qrc">:/icons/16x16/padlock.png</pixmap>
+         <pixmap resource="../../../../res/gui/app.qrc">:/icons/64x64/padlock.png</pixmap>
         </property>
-       </widget>
+        <property name="minimumSize">
+         <size>
+          <width>32</width>
+          <height>32</height>
+         </size>
+        </property>
+        <property name="maximumSize">
+         <size>
+          <width>32</width>
+          <height>32</height>
+         </size>
+        </property>
+        <property name="scaledContents">
+         <bool>true</bool>
+        </property>
+      </widget>
       </item>
       <item>
        <widget class="QLabel" name="m_pStatusLabel">