diff --git a/src/Commands/Field/FieldCreateCommand.php b/src/Commands/Field/FieldCreateCommand.php
index cc8041f..8256005 100644
--- a/src/Commands/Field/FieldCreateCommand.php
+++ b/src/Commands/Field/FieldCreateCommand.php
@@ -91,7 +91,7 @@ protected function checkFieltype($type) {
     // get available fieldtypes
     $fieldtypes = array();
     foreach (\ProcessWire\wire('modules') as $module) {
-      if (preg_match('/^Fieldtype/', $module->name)) {
+      if (preg_match('/^Fieldtype/', (string)$module->name)) {
         $fieldtypes[] = $module->name;
       }
     }