diff --git a/application/views/interface_assets/footer.php b/application/views/interface_assets/footer.php
index d5fc30779..4bf67917e 100644
--- a/application/views/interface_assets/footer.php
+++ b/application/views/interface_assets/footer.php
@@ -4,7 +4,7 @@
     */
     var option_map_tile_server = '<?php echo $this->optionslib->get_option('option_map_tile_server');?>';
     var option_map_tile_server_copyright = '<?php echo $this->optionslib->get_option('option_map_tile_server_copyright');?>';
-    var option_map_tile_subdomains = '<?php echo $this->optionslib->get_option('option_map_tile_subdomains');?>';
+    var option_map_tile_subdomains = '<?php echo $this->optionslib->get_option('option_map_tile_subdomains') ?? 'abc';?>';
 
     var base_url = "<?php echo base_url(); ?>"; // Base URL
     var site_url = "<?php echo site_url(); ?>"; // Site URL
diff --git a/application/views/visitor/exportmap/exportmap.php b/application/views/visitor/exportmap/exportmap.php
index 9246ced4c..19edf7217 100644
--- a/application/views/visitor/exportmap/exportmap.php
+++ b/application/views/visitor/exportmap/exportmap.php
@@ -1,7 +1,7 @@
 <script>
 	var slug = '<?php echo $slug; ?>';
 	var tileUrl="<?php echo $this->optionslib->get_option('option_map_tile_server');?>"
-	var option_map_tile_subdomains = '<?php echo $this->optionslib->get_option('option_map_tile_subdomains');?>';
+	var option_map_tile_subdomains = '<?php echo $this->optionslib->get_option('option_map_tile_subdomains') ?? 'abc';?>';
 	let user_map_custom = JSON.parse('<?php echo $user_map_custom; ?>');
 </script>
 <style>
diff --git a/application/views/visitor/exportmap/footer.php b/application/views/visitor/exportmap/footer.php
index 1ad053bb6..c853aa913 100644
--- a/application/views/visitor/exportmap/footer.php
+++ b/application/views/visitor/exportmap/footer.php
@@ -8,7 +8,7 @@
 		var site_url = "<?php echo site_url(); ?>"; // Site URL
 		var icon_dot_url = "<?php echo base_url();?>assets/images/dot.png";
 		var option_map_tile_server_copyright = '<?php echo $this->optionslib->get_option('option_map_tile_server_copyright');?>';
-		var option_map_tile_subdomains = '<?php echo $this->optionslib->get_option('option_map_tile_subdomains');?>';
+		var option_map_tile_subdomains = '<?php echo $this->optionslib->get_option('option_map_tile_subdomains') ?? 'abc';?>';
 	</script>
 
 	<!-- General JS Files used across Wavelog -->
diff --git a/application/views/visitor/layout/footer.php b/application/views/visitor/layout/footer.php
index f7c344f29..10d7e4563 100644
--- a/application/views/visitor/layout/footer.php
+++ b/application/views/visitor/layout/footer.php
@@ -8,7 +8,7 @@
   var site_url = "<?php echo site_url(); ?>"; // Site URL
   var icon_dot_url = "<?php echo base_url();?>assets/images/dot.png";
   var option_map_tile_server_copyright = '<?php echo $this->optionslib->get_option('option_map_tile_server_copyright');?>';
-  var option_map_tile_subdomains = '<?php echo $this->optionslib->get_option('option_map_tile_subdomains');?>';
+  var option_map_tile_subdomains = '<?php echo $this->optionslib->get_option('option_map_tile_subdomains') ?? 'abc';?>';
   var lang_general_gridsquares = "<?= __("Gridsquares"); ?>";
 </script>