diff --git a/core/model/Hierarchy.php b/core/model/Hierarchy.php
index 375cc8dc2..33e440790 100644
--- a/core/model/Hierarchy.php
+++ b/core/model/Hierarchy.php
@@ -497,7 +497,7 @@ class Hierarchy extends DataObjectDecorator {
 	 * @return DataObjectSet
 	 */
 	public function stageChildren($showAll = false) {
-		$extraFilter = $showAll ? '' : " AND \"ShowInMenus\"";
+		$extraFilter = $showAll ? '' : " AND \"ShowInMenus\"=1";
 		$baseClass = ClassInfo::baseDataClass($this->owner->class);
 		
 		$staged = DataObject::get($baseClass, "\"{$baseClass}\".\"ParentID\" = " . (int)$this->owner->ID . " AND \"{$baseClass}\".\"ID\" != " . (int)$this->owner->ID . $extraFilter, "");
diff --git a/security/Member.php b/security/Member.php
index eddcb2059..b6e988711 100644
--- a/security/Member.php
+++ b/security/Member.php
@@ -654,7 +654,7 @@ class Member extends DataObject {
 		if(count($collatedGroups) > 0) {
 			$collatedGroups = implode(", ", array_unique($collatedGroups));
 
-			$unfilteredGroups = singleton('Group')->instance_get("\"ID\" IN ($collatedGroups)", '"ID"', "", "", "Member_GroupSet");
+			$unfilteredGroups = singleton('Group')->instance_get("\"ID\" IN ($collatedGroups)", "\"Group\".\"ID\"", "", "", "Member_GroupSet");
 			$result = new ComponentSet();
 			
 			// Only include groups where allowedIPAddress() returns true
diff --git a/security/Security.php b/security/Security.php
index 7d9fb2fc6..a4d0b54df 100644
--- a/security/Security.php
+++ b/security/Security.php
@@ -583,7 +583,7 @@ class Security extends Controller {
 	 *                privileges.
 	 */
 	static function findAnAdministrator($username = 'admin', $password = 'password') {
-		$permission = DataObject::get_one("Permission", "\"Code\" = 'ADMIN'", true, '"ID"');
+		$permission = DataObject::get_one("Permission", "\"Code\" = 'ADMIN'", true, "\"Permission\".\"ID\"");
 
 		$adminGroup = null;
 		if($permission) $adminGroup = DataObject::get_one("Group", "\"Group\".\"ID\" = '{$permission->GroupID}'", true, "\"Group\".\"ID\"");