diff --git a/Classes/DataHandler/AfterDatabaseOperations.php b/Classes/DataHandler/AfterDatabaseOperations.php
index 582a7d0..7c40981 100644
--- a/Classes/DataHandler/AfterDatabaseOperations.php
+++ b/Classes/DataHandler/AfterDatabaseOperations.php
@@ -380,7 +380,7 @@ public function getAvailableColumns($layout = '', $table = '', $id = 0)
                 }
             }
             // Implode into a CSV string as BackendLayoutView->getColPosListItemsParsed returns an array
-            $tcaColumns = '-2,-1,' . implode(',', $temp);
+            $tcaColumns = rtrim('-2,-1,' . implode(',', $temp), ',');
         }
         return $tcaColumns;
     }
diff --git a/Classes/Plugin/Gridelements.php b/Classes/Plugin/Gridelements.php
index 3f61efb..9e6449e 100644
--- a/Classes/Plugin/Gridelements.php
+++ b/Classes/Plugin/Gridelements.php
@@ -100,7 +100,7 @@ public function main($content = '', $conf = [])
         $layoutSetup->init($this->cObj->data['pid'], $conf);
 
         $availableColumns = $layoutSetup->getLayoutColumns($layout);
-        $csvColumns = str_replace('-2,-1,', '', $availableColumns['CSV']);
+        $csvColumns = ltrim(str_replace('-2,-1', '', $availableColumns['CSV']), ',');
         $this->getChildren($element, $pid, $csvColumns);
 
         // and we have to determine the frontend setup related to the backend layout record which is assigned to this container