diff --git a/tests/fann_set_callback_basic.phpt b/tests/fann_set_callback_basic.phpt
index 465b2b4..b544c43 100644
--- a/tests/fann_set_callback_basic.phpt
+++ b/tests/fann_set_callback_basic.phpt
@@ -10,6 +10,7 @@ function ann_callback( $ann, $train_data, $max_epochs, $epochs_between_reports,
 	var_dump($epochs_between_reports);
 	var_dump($desired_error);
 	var_dump($epochs);
+	return true;
 }
 
 $num_input = 2;