diff --git a/lib/customer_repo.rb b/lib/customer_repo.rb
index 6bde93f6c93222c28fe3230c829cdbd1b41e4cf6..16d3284f0a64dd5d8482a72ebed229edbcdc4188 100644
--- a/lib/customer_repo.rb
+++ b/lib/customer_repo.rb
@@ -64,7 +64,7 @@ class CustomerRepo
 		Tel = Struct.new(:tel) do
 			def keys(redis)
 				redis.get("catapult_jid-#{tel}").then do |jid|
-					raise NotFound, "No jid" unless jid.to_s =~ /\Acustomer_/
+					raise NotFound, "No jid for '#{tel}'" unless jid.to_s =~ /\Acustomer_/
 
 					JID.for(jid).keys(redis, tel: tel)
 				end