diff --git a/mozilla/mailnews/mime/emitters/src/nsMimeHtmlEmitter.h b/mozilla/mailnews/mime/emitters/src/nsMimeHtmlEmitter.h
index 6a6280f6c35..011ced5a2ab 100644
--- a/mozilla/mailnews/mime/emitters/src/nsMimeHtmlEmitter.h
+++ b/mozilla/mailnews/mime/emitters/src/nsMimeHtmlEmitter.h
@@ -30,7 +30,6 @@
 #include "nsIOutputStream.h"
 #include "nsIInputStream.h"
 #include "nsIURI.h"
-#include "nsIPref.h"
 #include "nsIChannel.h"
 #include "nsIMimeMiscStatus.h"
 #include "nsIMimeConverter.h"
diff --git a/mozilla/mailnews/mime/emitters/src/nsMimeRawEmitter.h b/mozilla/mailnews/mime/emitters/src/nsMimeRawEmitter.h
index d76ddcc0c9d..dfe6d5a3fb0 100644
--- a/mozilla/mailnews/mime/emitters/src/nsMimeRawEmitter.h
+++ b/mozilla/mailnews/mime/emitters/src/nsMimeRawEmitter.h
@@ -29,7 +29,6 @@
 #include "nsIStreamListener.h"
 #include "nsIOutputStream.h"
 #include "nsIURI.h"
-#include "nsIPref.h"
 #include "nsIChannel.h"
 
 class nsMimeRawEmitter : public nsMimeBaseEmitter {
diff --git a/mozilla/mailnews/mime/emitters/src/nsMimeXmlEmitter.h b/mozilla/mailnews/mime/emitters/src/nsMimeXmlEmitter.h
index 61e741ba213..3b3e314b9f4 100644
--- a/mozilla/mailnews/mime/emitters/src/nsMimeXmlEmitter.h
+++ b/mozilla/mailnews/mime/emitters/src/nsMimeXmlEmitter.h
@@ -29,7 +29,6 @@
 #include "nsIStreamListener.h"
 #include "nsIOutputStream.h"
 #include "nsIURI.h"
-#include "nsIPref.h"
 #include "nsIChannel.h"
 
 class nsMimeXmlEmitter : public nsMimeBaseEmitter {