diff --git a/gtk2_ardour/ui/add_tracks_dialog.xml b/gtk2_ardour/ui/add_tracks_dialog.xml
index 970fb1005c..a8a034e56d 100644
--- a/gtk2_ardour/ui/add_tracks_dialog.xml
+++ b/gtk2_ardour/ui/add_tracks_dialog.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Dialog title="Add Track" resizeable="False">
-<style name="generic_control"
+  <style name="generic_control"
          winfont ="Arial Bold 10"
          macfont ="Helvetica Bold 10"
          fgnormal="#6D6E72"