diff --git a/extension/Classes/Core/QuickFormQuery.php b/extension/Classes/Core/QuickFormQuery.php
index d09d00fa8b893ffab5facbd2f16438b24b2b6a8e..88588937009f8c8dd85b4a8ceb98b05166afb587 100644
--- a/extension/Classes/Core/QuickFormQuery.php
+++ b/extension/Classes/Core/QuickFormQuery.php
@@ -1160,6 +1160,11 @@ class QuickFormQuery {
 //            unset($formSpec[FE_FILL_STORE_VAR]);
         }
 
+        if ($formSpec[F_FORWARD_MODE] === '') {
+            // This should not happen since '' is not a valid choice for column forwardMode. But it happened anyway. So to be safe.
+            $formSpec[F_FORWARD_MODE] = F_FORWARD_MODE_AUTO;
+        }
+
         $this->formSpec = $formSpec;
 
         // Clear