diff --git a/src/pages/signature/signature.ts b/src/pages/signature/signature.ts
index 4881b67..f5b60fa 100755
--- a/src/pages/signature/signature.ts
+++ b/src/pages/signature/signature.ts
@@ -1399,7 +1399,7 @@ class SignatureElement extends HTMLElement {
     private submitNewDocument(event: Event) {
         event.preventDefault();
         
-        const form = document.getElementById('newDocumentForm') as HTMLFormElement;
+        const form = this.shadowRoot?.getElementById('newDocumentForm') as HTMLFormElement;
         if (!form) {
             this.showAlert('Form not found');
             return;
@@ -1507,7 +1507,7 @@ class SignatureElement extends HTMLElement {
     private submitCommonDocument(event: Event) {
         event.preventDefault();
         
-        const form = document.getElementById('newDocumentForm') as HTMLFormElement;
+        const form = this.shadowRoot?.getElementById('newDocumentForm') as HTMLFormElement;
         if (!form) {
             this.showAlert('Form not found');
             return;