diff --git a/code/forms/GridFieldSortableRows.php b/code/forms/GridFieldSortableRows.php
index e956eda..b8595a3 100644
--- a/code/forms/GridFieldSortableRows.php
+++ b/code/forms/GridFieldSortableRows.php
@@ -116,18 +116,18 @@ class GridFieldSortableRows implements GridField_HTMLProvider, GridField_ActionP
 	protected function fixSortColumn($gridField, SS_List $dataList) {
 		$list=clone $dataList;
 		$list->dataQuery()->limit(array());
-        
-        $many_many = ($list instanceof ManyManyList);
-        if (!$many_many) {
-            $sng=singleton($gridField->getModelClass());
-            $fieldType=$sng->db($this->sortColumn);
-            if(!$fieldType || !($fieldType=='Int' || is_subclass_of('Int', $fieldType))) {
-                user_error('Sort column '.$this->sortColumn.' must be an Int, column is of type '.$fieldType, E_USER_ERROR);
-                exit;
-            }
-        }
-        
-        
+		
+		$many_many = ($list instanceof ManyManyList);
+		if (!$many_many) {
+			$sng=singleton($gridField->getModelClass());
+			$fieldType=$sng->db($this->sortColumn);
+			if(!$fieldType || !($fieldType=='Int' || is_subclass_of('Int', $fieldType))) {
+				user_error('Sort column '.$this->sortColumn.' must be an Int, column is of type '.$fieldType, E_USER_ERROR);
+				exit;
+			}
+		}
+		
+		
 		$max = $list->Max($this->sortColumn);
 		if($list->where('"'.$this->sortColumn.'"=0')->Count()>0) {
 			//Start transaction if supported
@@ -140,17 +140,17 @@ class GridFieldSortableRows implements GridField_HTMLProvider, GridField_ActionP
 			$sortColumn = $this->sortColumn;
 			$i = 1;
 			
-            if ($many_many) {
-                list($parentClass, $componentClass, $parentField, $componentField, $table) = $owner->many_many($gridField->getName());
-                $extraFields=$owner->many_many_extraFields($gridField->getName());
-                
-                if(!$extraFields || !array_key_exists($this->sortColumn, $extraFields) || !($extraFields[$this->sortColumn]=='Int' || is_subclass_of('Int', $extraFields[$this->sortColumn]))) {
-                    user_error('Sort column '.$this->sortColumn.' must be an Int, column is of type '.$fieldType, E_USER_ERROR);
-                    exit;
-                }
-            }
-            
-            
+			if ($many_many) {
+				list($parentClass, $componentClass, $parentField, $componentField, $table) = $owner->many_many($gridField->getName());
+				$extraFields=$owner->many_many_extraFields($gridField->getName());
+				
+				if(!$extraFields || !array_key_exists($this->sortColumn, $extraFields) || !($extraFields[$this->sortColumn]=='Int' || is_subclass_of('Int', $extraFields[$this->sortColumn]))) {
+					user_error('Sort column '.$this->sortColumn.' must be an Int, column is of type '.$fieldType, E_USER_ERROR);
+					exit;
+				}
+			}
+			
+			
 			//@TODO Need to optimize this to eliminate some of the resource load could use raw queries to be more efficient
 			foreach($list as $obj) {
 				if($many_many) {