diff --git a/manifests/foreman_proxy_content.pp b/manifests/foreman_proxy_content.pp
index 2ede4d21..a92f704c 100644
--- a/manifests/foreman_proxy_content.pp
+++ b/manifests/foreman_proxy_content.pp
@@ -24,7 +24,7 @@
   validate_present($foreman_proxy_fqdn)
 
   if $foreman_proxy_fqdn == $::fqdn {
-    warning('The hostname is the same as the foreman-proxy')
+    fail('The hostname is the same as the provided hostname for the foreman-proxy')
   }
 
   class { '::certs::puppet':        hostname => $foreman_proxy_fqdn, cname => $foreman_proxy_cname }
diff --git a/spec/classes/certs_foreman_proxy_content_spec.rb b/spec/classes/certs_foreman_proxy_content_spec.rb
index cdf182d1..7352de97 100644
--- a/spec/classes/certs_foreman_proxy_content_spec.rb
+++ b/spec/classes/certs_foreman_proxy_content_spec.rb
@@ -7,7 +7,8 @@
 
   let :params do
     {
-      :certs_tar => '/tmp/tar'
+      :certs_tar => '/tmp/tar',
+      :foreman_proxy_fqdn => 'bar.example.com'
     }
   end