diff --git a/app/javascript/dashboard/routes/dashboard/settings/profile/MessageSignature.vue b/app/javascript/dashboard/routes/dashboard/settings/profile/MessageSignature.vue
index 7639465be..a86b4fa5c 100644
--- a/app/javascript/dashboard/routes/dashboard/settings/profile/MessageSignature.vue
+++ b/app/javascript/dashboard/routes/dashboard/settings/profile/MessageSignature.vue
@@ -38,7 +38,7 @@ const signature = ref(props.messageSignature);
 const emit = defineEmits(['update-signature']);
 
 watch(
-  () => props.messageSignature,
+  () => props.messageSignature ?? '',
   newValue => {
     signature.value = newValue;
   }