diff --git a/mozilla/content/base/src/nsPlainTextSerializer.cpp b/mozilla/content/base/src/nsPlainTextSerializer.cpp
index 6552a280db2..0de72d7d30b 100644
--- a/mozilla/content/base/src/nsPlainTextSerializer.cpp
+++ b/mozilla/content/base/src/nsPlainTextSerializer.cpp
@@ -843,6 +843,7 @@ nsPlainTextSerializer::DoCloseContainer(PRInt32 aTag)
 
   else if (IsBlockLevel(aTag)
            && type != eHTMLTag_blockquote
+           && type != eHTMLTag_div
            && type != eHTMLTag_script
            && type != eHTMLTag_doctypeDecl
            && type != eHTMLTag_markupDecl) {