diff --git a/lib/NGCP/Schema/provisioning.pm b/lib/NGCP/Schema/provisioning.pm
index 2845b09c..cc68fd6f 100644
--- a/lib/NGCP/Schema/provisioning.pm
+++ b/lib/NGCP/Schema/provisioning.pm
@@ -63,7 +63,7 @@ method get_domain($data) {
     Exception->throw({
         description => 'Client.Syntax.MissingParam',
         message => "missing parameter 'domain' in request",
-    }) unless exists $$data{domain};
+    }) unless exists $data->{domain};
     Exception->throw({
         description => 'Client.Syntax.MalformedDomain',
         message => "malformed domain '$data->{domain}' in request",