diff --git a/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/App.vue b/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/App.vue
index 7b62f3fa7..52c33b0f8 100644
--- a/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/App.vue
+++ b/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/App.vue
@@ -331,8 +331,8 @@ const $toast = useToast();
 
 const signature = window.signature;
 
-const setZoomLevel = (zoomLevel: number) => {
-  zoom.value = zoomLevel;
+const setZoomLevel = (zoomLevel: string) => {
+  zoom.value = Number.parseFloat(zoomLevel);
   setPage(page.value);
   setTimeout(() => drawAllZones(page.value), 200);
 };