diff --git a/indra/newview/skins/default/xui/en/floater_im.xml b/indra/newview/skins/default/xui/en/floater_im.xml
index b6cf05aefcee636379de9d58b38d2e8e2fa38e16..92a611175981dab7a66b5d291067330aba897db9 100644
--- a/indra/newview/skins/default/xui/en/floater_im.xml
+++ b/indra/newview/skins/default/xui/en/floater_im.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8" standalone="yes" ?>
 <multi_floater
+ legacy_header_height="18" 
  can_resize="true"
  follows="left|bottom"
  height="422"