diff --git a/gui/dialogs/atc-ai.xml b/gui/dialogs/atc-ai.xml
index a7fc63e8d..e9b67fdac 100755
--- a/gui/dialogs/atc-ai.xml
+++ b/gui/dialogs/atc-ai.xml
@@ -32,18 +32,18 @@
   <label>Enable AI traffic</label>
   <property>/sim/ai-traffic/enabled</property>
  </checkbox>
- 
+
   <text>
    <x>30</x>
    <y>100</y>
    <label>AI traffic density:</label>
-  </text>
-
+  </text>
+
   <combo>
    <x>30</x>
    <y>80</y>
    <width>200</width>
-   <height>25</height>
+   <height>25</height>
    <property>/sim/ai-traffic/level</property>
    <value>1</value>
    <value>2</value>