diff --git a/app/templates/layout.html b/app/templates/layout.html
index 9cc4579..65e8dbd 100644
--- a/app/templates/layout.html
+++ b/app/templates/layout.html
@@ -136,7 +136,7 @@
 		<script src="https://www.amcharts.com/lib/3/amcharts.js"></script>
 		<script src="https://www.amcharts.com/lib/3/serial.js"></script>
 		<script src="https://www.amcharts.com/lib/3/themes/patterns.js"></script>
-		<script src="http://openlayers.org/api/OpenLayers.js"></script>
+		<script src="https://openlayers.org/api/OpenLayers.js"></script>
 		<script src="{{ url_for('static', filename='js/main.js') }}"></script>
 		<script src="{{ url_for('static', filename='js/fillingstations.js') }}"></script>
     </head>