diff --git a/src/main/resources/messages/messages.properties b/src/main/resources/messages/messages.properties
index 7b8b5dfd8..193565895 100644
--- a/src/main/resources/messages/messages.properties
+++ b/src/main/resources/messages/messages.properties
@@ -46,3 +46,6 @@ visitDate=Visit Date
 editOwner=Edit Owner
 addNewPet=Add New Pet
 petsAndVisits=Pets and Visits
+error.404=The requested page was not found.
+error.500=An internal server error occurred.
+error.general=An unexpected error occurred.