diff --git a/app/src/main/res/values/map_layers.xml b/app/src/main/res/values/map_layers.xml
index 081576f..c3ffe21 100644
--- a/app/src/main/res/values/map_layers.xml
+++ b/app/src/main/res/values/map_layers.xml
@@ -26,4 +26,11 @@
         <item>Cyclemap\nLimited access</item>
     </string-array>
 
+    <string-array name="pref_map_layers_values">
+        <item>osm.mapnik</item>
+        <item>osm.humanitarian</item>
+        <item>thunderforest.outdoors</item>
+        <item>thunderforest.cycle</item>
+    </string-array>
+
 </resources>
\ No newline at end of file