diff --git a/earth/map_render.html b/earth/map_render.html
index 94f5ff9..34b673b 100644
--- a/earth/map_render.html
+++ b/earth/map_render.html
@@ -378,7 +378,7 @@ loadGridNumbers(zoneURL).then(gridNumbers => {
 
         // Add an event listener to the button
         button.addEventListener('click', function() {
-            window.open( ipns , "_new");
+            window.open( ipns , "_blank");
         });
 
         // Append the button to the button container