diff --git a/mozilla/editor/libeditor/html/nsHTMLDataTransfer.cpp b/mozilla/editor/libeditor/html/nsHTMLDataTransfer.cpp
index a6c8417b449..8fb93f49957 100644
--- a/mozilla/editor/libeditor/html/nsHTMLDataTransfer.cpp
+++ b/mozilla/editor/libeditor/html/nsHTMLDataTransfer.cpp
@@ -2636,7 +2636,7 @@ nsresult nsHTMLEditor::ParseFragment(const nsAString & aFragStr,
                                      nsCOMPtr<nsIDOMNode> *outNode)
 {
   // figure out if we are parsing full context or not
-  PRBool bContext = !aTagStack.IsEmpty();
+  PRBool bContext = aTagStack.IsEmpty();
 
   // create the parser to do the conversion.
   nsresult res;