diff --git a/examples/2D_tutorials/tutorial_training_8_gaussians_to_moons.ipynb b/examples/2D_tutorials/tutorial_training_8_gaussians_to_moons.ipynb
index e88ba09..3cc1dd6 100644
--- a/examples/2D_tutorials/tutorial_training_8_gaussians_to_moons.ipynb
+++ b/examples/2D_tutorials/tutorial_training_8_gaussians_to_moons.ipynb
@@ -617,7 +617,7 @@
     "\n",
     "    loss.backward()\n",
     "    optimizer.step()\n",
-    "    \n",
+    "\n",
     "    if (k + 1) % 5000 == 0:\n",
     "        end = time.time()\n",
     "        print(f\"{k+1}: loss {loss.item():0.3f} time {(end - start):0.2f}\")\n",