diff --git a/importexport/inc/class.importexport_definitions_bo.inc.php b/importexport/inc/class.importexport_definitions_bo.inc.php
index 956938d653..7fe4a6d3d3 100644
--- a/importexport/inc/class.importexport_definitions_bo.inc.php
+++ b/importexport/inc/class.importexport_definitions_bo.inc.php
@@ -123,7 +123,9 @@ class importexport_definitions_bo {
 			unset($export_data['definitions'][$definition->name]['definition_id']);
 			unset($export_data['definitions'][$definition->name]['description']);
 			unset($export_data['definitions'][$definition->name]['user_timezone_read']);
-			unset($export_data['definitions'][$definition->name]['plugin_options']['user_timezone_read']);
+			if(is_array($export_data['definitions'][$definition->name]['plugin_options'])) {
+				unset($export_data['definitions'][$definition->name]['plugin_options']['user_timezone_read']);
+			}
 			unset($definition);
 		}