diff --git a/source/statistics/notations.rst b/source/statistics/notations.rst
index bb9c878..d871797 100644
--- a/source/statistics/notations.rst
+++ b/source/statistics/notations.rst
@@ -20,7 +20,8 @@ Two different notation conventions are used. The one to use depends if you are w
 
 .. list-table:: Notation
     :align: center
-            
+    :header-rows: 1
+
     * - Metric
       - Population
       - Sample