diff --git a/code/Controllers/CMSMain.php b/code/Controllers/CMSMain.php
index 70c1db58..e19dbac4 100644
--- a/code/Controllers/CMSMain.php
+++ b/code/Controllers/CMSMain.php
@@ -339,7 +339,7 @@ class CMSMain extends LeftAndMain implements CurrentPageIdentifier, PermissionPr
 		}
 
 		if($placeholders) {
-			$link .= (strpos($link, '?') === false ? "?$placeholders" : "&$placeholders");
+			$link .= (strpos($link, '?') === false ? "?$placeholders" : "&$placeholders");
 		}
 
 		return $link;
diff --git a/templates/SilverStripe/CMS/Controllers/Includes/CMSMain_TreeView.ss b/templates/SilverStripe/CMS/Controllers/Includes/CMSMain_TreeView.ss
index 001358e4..02b9f796 100644
--- a/templates/SilverStripe/CMS/Controllers/Includes/CMSMain_TreeView.ss
+++ b/templates/SilverStripe/CMS/Controllers/Includes/CMSMain_TreeView.ss
@@ -17,7 +17,7 @@ $ExtraTreeTools
 			data-url-tree="$LinkWithSearch($Link(getsubtree)).ATT"
 			data-url-savetreenode="$Link(savetreenode).ATT"
 			data-url-updatetreenodes="$Link(updatetreenodes).ATT"
-			data-url-addpage="{$LinkPageAdd('AddForm/?action_doAdd=1', 'ParentID=%s&PageType=%s').ATT}"
+			data-url-addpage="{$LinkPageAdd('AddForm/?action_doAdd=1', 'ParentID=%s&PageType=%s').ATT}"
 			data-url-editpage="$LinkPageEdit('%s').ATT"
 			data-url-duplicate="{$Link('duplicate/%s').ATT}"
 			data-url-duplicatewithchildren="{$Link('duplicatewithchildren/%s').ATT}"
@@ -35,7 +35,7 @@ $ExtraTreeTools
 		data-url-tree="$LinkWithSearch($Link(getsubtree)).ATT"
 		data-url-savetreenode="$Link(savetreenode).ATT"
 		data-url-updatetreenodes="$Link(updatetreenodes).ATT"
-		data-url-addpage="{$LinkPageAdd('AddForm/?action_doAdd=1', 'ParentID=%s&PageType=%s').ATT}"
+		data-url-addpage="{$LinkPageAdd('AddForm/?action_doAdd=1', 'ParentID=%s&PageType=%s').ATT}"
 		data-url-editpage="$LinkPageEdit('%s').ATT"
 		data-url-duplicate="{$Link('duplicate/%s').ATT}"
 		data-url-duplicatewithchildren="{$Link('duplicatewithchildren/%s').ATT}"