diff --git a/content/xml/document/src/nsXMLPrettyPrinter.cpp b/content/xml/document/src/nsXMLPrettyPrinter.cpp
index 2239b078b84d..1f7f1f1af21f 100644
--- a/content/xml/document/src/nsXMLPrettyPrinter.cpp
+++ b/content/xml/document/src/nsXMLPrettyPrinter.cpp
@@ -205,7 +205,7 @@ nsXMLPrettyPrinter::MaybeUnhook(nsIContent* aContent)
 {
     // If there either aContent is null (the document-node was modified) or
     // there isn't a binding parent we know it's non-anonymous content.
-    if (aContent || !aContent->GetBindingParent()) {
+    if (!aContent || !aContent->GetBindingParent()) {
         mUnhookPending = PR_TRUE;
     }
 }