diff --git a/mailnews/base/resources/content/mailWindowOverlay.js b/mailnews/base/resources/content/mailWindowOverlay.js
index 8ede3ec8e5e..a67fb0b209c 100644
--- a/mailnews/base/resources/content/mailWindowOverlay.js
+++ b/mailnews/base/resources/content/mailWindowOverlay.js
@@ -56,7 +56,7 @@ const kWideMailLayout = 1;
 const kVerticalMailLayout = 2;
 
 // Per message header flags to keep track of whether the user is allowing remote
-// content for a particular message. 
+// content for a particular message.
 // if you change or add more values to these constants, be sure to modify
 // the corresponding definitions in nsMsgContentPolicy.cpp
 const kNoRemoteContentPolicy = 0;
diff --git a/mailnews/base/resources/content/mailWindowOverlay.xul b/mailnews/base/resources/content/mailWindowOverlay.xul
index 39a027e2d0a..2cda87fd744 100644
--- a/mailnews/base/resources/content/mailWindowOverlay.xul
+++ b/mailnews/base/resources/content/mailWindowOverlay.xul
@@ -60,7 +60,7 @@
 %contentAreaCommandsDTD;
 <!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
 %brandDTD;
-]>  
+]>
 
 <overlay
   xmlns:nc="http://home.netscape.com/NC-rdf#"