diff --git a/src/endiannessbox.ui b/src/endiannessbox.ui
new file mode 100644
--- /dev/null
+++ b/src/endiannessbox.ui
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>EndiannessBox</class>
+ <widget class="QGroupBox" name="EndiannessBox">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>131</width>
+    <height>86</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>GroupBox</string>
+  </property>
+  <property name="title">
+   <string>Byte Order:</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QRadioButton" name="rbLittleE">
+     <property name="toolTip">
+      <string>least significant byte first</string>
+     </property>
+     <property name="text">
+      <string>Little Endian</string>
+     </property>
+     <property name="checked">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QRadioButton" name="rbBigE">
+     <property name="toolTip">
+      <string>most significant byte first</string>
+     </property>
+     <property name="text">
+      <string>Big Endian</string>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>