diff --git a/filtre_gui.ui b/filtre_gui.ui
index f20bb1c..fcbc808 100644
--- a/filtre_gui.ui
+++ b/filtre_gui.ui
@@ -174,7 +174,7 @@
      <rect>
       <x>200</x>
       <y>46</y>
-      <width>140</width>
+      <width>80</width>
       <height>20</height>
      </rect>
     </property>
@@ -237,8 +237,33 @@
      </rect>
     </property>
     <property name="text">
-     <string>Amplitude (V)</string>
+     <string>Amplitude (dB)</string>
+    </property>
+   </widget>
+   <widget class="QComboBox" name="uniteFreq_combobox">
+    <property name="geometry">
+     <rect>
+      <x>290</x>
+      <y>46</y>
+      <width>50</width>
+      <height>20</height>
+     </rect>
     </property>
+    <item>
+     <property name="text">
+      <string>kHz</string>
+     </property>
+    </item>
+    <item>
+     <property name="text">
+      <string>MHz</string>
+     </property>
+    </item>
+    <item>
+     <property name="text">
+      <string>GHz</string>
+     </property>
+    </item>
    </widget>
   </widget>
   <widget class="QStatusBar" name="statusbar"/>