diff --git a/observations/templates/observations/index.html b/observations/templates/observations/index.html
index b741377b00bb3c3ab22c5ea298565709c4b6a980..feec7d46517613b75eacd3b67286669fc905960f 100644
--- a/observations/templates/observations/index.html
+++ b/observations/templates/observations/index.html
@@ -68,8 +68,8 @@
                             <th>{% trans "Organism" %}</th>
                             <th>{% trans "Crop" %}</th>
                             <th>{% trans "Heading" %}</th>
-                            <th align="center">{% trans "Time series" %}</th>
-                            <th align="center">{% trans "Details" %}</th>
+                            <th>{% trans "Time series" %}</th>
+                            <th>{% trans "Details" %}</th>
                             <th></th>
                     </thead>
                     <tbody id="observationTableBody">