diff --git a/mail/components/migration/content/migration.css b/mail/components/migration/content/migration.css
deleted file mode 100644
index e69de29bb2d..00000000000
diff --git a/mail/components/migration/content/migration.xul b/mail/components/migration/content/migration.xul
index 7271e1bec9d..9577e14f846 100644
--- a/mail/components/migration/content/migration.xul
+++ b/mail/components/migration/content/migration.xul
@@ -38,10 +38,6 @@
 
 <?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
 
-#ifndef XP_MACOSX
-<?xml-stylesheet href="chrome://messenger/content/migration/migration.css" type="text/css"?>
-#endif
-
 <!DOCTYPE dialog SYSTEM "chrome://messenger/locale/migration/migration.dtd" >
  
 <wizard id="migrationWizard"
diff --git a/mail/components/migration/jar.mn b/mail/components/migration/jar.mn
index 93adc36da73..5a42bc8c625 100644
--- a/mail/components/migration/jar.mn
+++ b/mail/components/migration/jar.mn
@@ -1,5 +1,3 @@
 messenger.jar:
 *  content/messenger/migration/migration.xul                 (content/migration.xul)
 *  content/messenger/migration/migration.js                  (content/migration.js)
-*  content/messenger/migration/migration.css                 (content/migration.css)
-
diff --git a/other-licenses/branding/thunderbird/content/jar.mn b/other-licenses/branding/thunderbird/content/jar.mn
index d88cf6ad6b0..821d6bd236f 100644
--- a/other-licenses/branding/thunderbird/content/jar.mn
+++ b/other-licenses/branding/thunderbird/content/jar.mn
@@ -2,7 +2,6 @@ messenger.jar:
 % content branding %content/branding/ xpcnativewrappers=yes
   content/branding/about-credits.png                (about-credits.png)
   content/branding/about.png                        (about-thunderbird.png)
-  content/branding/thunderbird-wizard-badge.png     (thunderbird-wizard-badge.png)
   content/branding/thunderbird-watermark.png        (thunderbird-watermark.png)
   content/branding/icon48.png                       (icon48.png)
   content/branding/icon64.png                       (icon64.png)
diff --git a/other-licenses/branding/thunderbird/content/thunderbird-wizard-badge.png b/other-licenses/branding/thunderbird/content/thunderbird-wizard-badge.png
deleted file mode 100644
index e69de29bb2d..00000000000