diff --git a/src/test/groovy/com/df/fhrs/service/FhrsServiceSpec.groovy b/src/test/groovy/com/df/fhrs/service/FhrsServiceSpec.groovy
index 2976d6a..5b52472 100644
--- a/src/test/groovy/com/df/fhrs/service/FhrsServiceSpec.groovy
+++ b/src/test/groovy/com/df/fhrs/service/FhrsServiceSpec.groovy
@@ -163,6 +163,7 @@ class FhrsServiceSpec extends Specification {
         ] as Establishments,
         OK
     )
-    thrown NoEstablishmentFoundException
+    NoEstablishmentFoundException noEstablishmentFoundException = thrown()
+    noEstablishmentFoundException.message.contains(unknownAuthorityId.toString())
   }
 }