diff --git a/app/src/main/java/jackall/devrealm/viewmodel/ItemViewModel.kt b/app/src/main/java/jackall/devrealm/viewmodel/ItemViewModel.kt
index de62ecd..6343593 100644
--- a/app/src/main/java/jackall/devrealm/viewmodel/ItemViewModel.kt
+++ b/app/src/main/java/jackall/devrealm/viewmodel/ItemViewModel.kt
@@ -14,9 +14,11 @@
 
     init {
         person.addChangeListener<Person> { person ->
-            firstName.set(person.firstName)
-            lastName.set(person.lastName)
-            age.set(person.age.toString())
+            if (person.isValid) {
+                firstName.set(person.firstName)
+                lastName.set(person.lastName)
+                age.set(person.age.toString())
+            }
         }
     }
 }
\ No newline at end of file