diff --git a/src/Http/Controllers/EnquiryController.php b/src/Http/Controllers/EnquiryController.php
index 9302504..5a8079c 100644
--- a/src/Http/Controllers/EnquiryController.php
+++ b/src/Http/Controllers/EnquiryController.php
@@ -293,7 +293,7 @@ protected function buildValidation($form)
             }
 
             if ($input->required) {
-                $validationArray[$input->label] = 'required' . $additionalValidation;
+                $validationArray[str_replace(' ', '_', $input->label)] = 'required' . $additionalValidation;
             }
         }