diff --git a/indra/newview/skins/default/xui/en/floater_my_environments.xml b/indra/newview/skins/default/xui/en/floater_my_environments.xml
index 5565cdcaf0..dd05dd5a20 100644
--- a/indra/newview/skins/default/xui/en/floater_my_environments.xml
+++ b/indra/newview/skins/default/xui/en/floater_my_environments.xml
@@ -2,6 +2,8 @@
 <floater
         positioning="cascading"
         save_rect="true"
+        single_instance="true"
+        reuse_instance="true"
         legacy_header_height="18"
         can_resize="true"
         height="465"