diff --git a/src/main/resources/templates/fragments/common.html b/src/main/resources/templates/fragments/common.html
index 1e801d06f..d1567833e 100644
--- a/src/main/resources/templates/fragments/common.html
+++ b/src/main/resources/templates/fragments/common.html
@@ -232,7 +232,7 @@
       th:name="${name}+'-input'" th:id="${name}+'-input-container'" th:data-text="#{fileChooser.hoveredDragAndDrop}">
       <label class="file-input-btn d-none">
         <input type="file" class="form-control" th:name="${name}" th:id="${name}+'-input'" th:accept="${accept} + ',.zip'"
-          th:attr="multiple=${!disableMultipleFiles}" th:required="${notRequired} ? null : 'required'">
+          th:attr="multiple=${!disableMultipleFiles}" th:required="${notRequired} ? null : 'required'" oninvalid="alert('Please select a PDF file before submitting.');">
         Browse
       </label>
       <div class="d-flex justify-content-start align-items-center" id="fileInputText">
diff --git a/src/main/resources/templates/misc/stamp.html b/src/main/resources/templates/misc/stamp.html
index 8b4756842..36c549adb 100644
--- a/src/main/resources/templates/misc/stamp.html
+++ b/src/main/resources/templates/misc/stamp.html
@@ -28,7 +28,7 @@
                 <span class="tool-header-text" th:text="#{AddStampRequest.header}"></span>
               </div>
               <form id="stampFormGroup" method="post" enctype="multipart/form-data" th:action="@{'/api/v1/misc/add-stamp'}">
-                <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multipleInputsForSingleRequest=false, accept='application/pdf', notRequired=true)}"></div>
+                <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multipleInputsForSingleRequest=false, accept='application/pdf')}"></div>
                 <br>
                 <div class="mb-3">
                   <label for="pageOrder" th:text="#{pageSelectionPrompt}"></label>
@@ -194,22 +194,6 @@
             alphabetGroup.style.display = 'none';
           }
         }
-        document.addEventListener('DOMContentLoaded', function() {
-        const form = document.getElementById('stampFormGroup');
-        if (form) {
-          form.addEventListener('submit', function(event) {
-            const fileInput = document.getElementById('fileInput-input');
-            if (!fileInput || fileInput.files.length === 0) {
-              // Prevent the form from submitting
-              event.preventDefault();
-              event.stopPropagation();
-              alert('Please select a PDF file before submitting.');
-              return false;
-            }
-            return true;
-          }, true); 
-        }
-      });
         </script>
       </div>
       <th:block th:insert="~{fragments/footer.html :: footer}"></th:block>