diff --git a/lib/NGCP/Panel/Utils/Preferences.pm b/lib/NGCP/Panel/Utils/Preferences.pm
index 9b22d55fb7..439a9e1075 100644
--- a/lib/NGCP/Panel/Utils/Preferences.pm
+++ b/lib/NGCP/Panel/Utils/Preferences.pm
@@ -887,7 +887,10 @@ sub _check_pref_value {
             last SWITCH;
         };
         /^boolean$/ && do {
-            $err = 1 unless JSON::is_bool($value);
+            unless (JSON::is_bool($value)
+                    or (is_int($value) and ($value == 0 or $value == 1))) {
+                $err = 1;
+            }
             last SWITCH;
         };
         # default
diff --git a/tools_bin/ngcp-provisioning-template b/tools_bin/ngcp-provisioning-template
index ce9a044229..c3cbf0c4a7 100644
--- a/tools_bin/ngcp-provisioning-template
+++ b/tools_bin/ngcp-provisioning-template
@@ -280,6 +280,7 @@ sub _get_schema {
                 }
             }
         }
+        die("no provisioning.conf found\n") unless $schema;
     }
 
 }
@@ -295,6 +296,7 @@ sub _get_panel_config {
             last;
         }
     }
+    die("no ngcp_panel.conf found\n") unless $config;
     return $config;
 
 }