diff --git a/notebooks/exercise_only_nb_06_extreme_value_theory_for_anomaly_detection.ipynb b/notebooks/exercise_only_nb_06_extreme_value_theory_for_anomaly_detection.ipynb
index 5fc3f4e..b62d75e 100644
--- a/notebooks/exercise_only_nb_06_extreme_value_theory_for_anomaly_detection.ipynb
+++ b/notebooks/exercise_only_nb_06_extreme_value_theory_for_anomaly_detection.ipynb
@@ -1656,7 +1656,7 @@
    },
    "source": [
     "\n",
-    "#### Uncertainty Estimation in GEV \n",
+    "### Uncertainty Estimation in GEV \n",
     "\n",
     "Using the above functions, include error bars into the Q-Q plots of the maximum likelihood estimates of the GEV distribution found above.\n"
    ]