diff --git a/docs/examples/ecg_hrv/ecg_hrv.ipynb b/docs/examples/ecg_hrv/ecg_hrv.ipynb
index 0766e8a829..84cec5c3ce 100644
--- a/docs/examples/ecg_hrv/ecg_hrv.ipynb
+++ b/docs/examples/ecg_hrv/ecg_hrv.ipynb
@@ -4,7 +4,7 @@
             "cell_type": "markdown",
             "metadata": {},
             "source": [
-                "# Heart Rate Varability (HRV)"
+                "# Heart Rate Variability (HRV)"
             ]
         },
         {