diff --git a/examples/new_project_templates/lightning_module_template.py b/examples/new_project_templates/lightning_module_template.py
index 91fe8c3e..a0c65af5 100644
--- a/examples/new_project_templates/lightning_module_template.py
+++ b/examples/new_project_templates/lightning_module_template.py
@@ -116,7 +116,7 @@ class LightningTemplateModel(LightningModule):
         :param outputs: list of individual outputs of each validation step
         :return:
         """
-        return outputs.mean()
+        return torch.stack(outputs).mean()
 
         val_loss_mean = 0
         val_acc_mean = 0