diff --git a/lib/call_attempt.rb b/lib/call_attempt.rb
index 92bce9bc53c761bc4c3bd6b6bf6cdaa4a647d3f9..126654ea1ef97d4857d54844494974d46b69ed3d 100644
--- a/lib/call_attempt.rb
+++ b/lib/call_attempt.rb
@@ -91,6 +91,10 @@ class CallAttempt
 			[view]
 		end
 
+		def to_s
+			"Expired"
+		end
+
 		def create_call(*); end
 
 		def as_json(*)