diff --git a/apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/edit/components/HiddenFieldsCard.tsx b/apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/edit/components/HiddenFieldsCard.tsx
index 68697e0ffd..dcb0bc4045 100644
--- a/apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/edit/components/HiddenFieldsCard.tsx
+++ b/apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/edit/components/HiddenFieldsCard.tsx
@@ -162,7 +162,10 @@ const validateHiddenField = (
     return "Question already exists";
   }
   // no key words -- userId & suid & existing question ids
-  if (["userId", "suid"].includes(field) || existingQuestions.findIndex((q) => q.id === field) !== -1) {
+  if (
+    ["userId", "source", "suid", "end", "start", "welcomeCard", "hidden"].includes(field) ||
+    existingQuestions.findIndex((q) => q.id === field) !== -1
+  ) {
     return "Question not allowed";
   }
   // no spaced words --> should be valid query param on url
diff --git a/apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/edit/components/UpdateQuestionId.tsx b/apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/edit/components/UpdateQuestionId.tsx
index 7d7903ff74..65f873f9e5 100644
--- a/apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/edit/components/UpdateQuestionId.tsx
+++ b/apps/web/app/(app)/environments/[environmentId]/surveys/[surveyId]/edit/components/UpdateQuestionId.tsx
@@ -40,10 +40,10 @@ export default function UpdateQuestionId({
       updateQuestion(questionIdx, { id: prevValue });
       toast.error("ID should not be empty.");
       return;
-    } else if (currentValue === "source" || currentValue === "suID" || currentValue === "userId") {
+    } else if (["userId", "source", "suid", "end", "start", "welcomeCard", "hidden"].includes(currentValue)) {
       setCurrentValue(prevValue);
       updateQuestion(questionIdx, { id: prevValue });
-      toast.error("ID cannot used reserved words.");
+      toast.error("Reserved words cannot be used as question ID");
       return;
     } else {
       setIsInputInvalid(false);