diff --git a/indra/newview/skins/ansastorm/xui/en/panel_fs_radar.xml b/indra/newview/skins/ansastorm/xui/en/panel_fs_radar.xml
index 553e6c0ea1..5838f263e9 100644
--- a/indra/newview/skins/ansastorm/xui/en/panel_fs_radar.xml
+++ b/indra/newview/skins/ansastorm/xui/en/panel_fs_radar.xml
@@ -174,6 +174,7 @@
 						 multi_select="true"
 						 content_type="Agents"
 						 persist_sort_order="true"
+						 primary_sort_only="true"
 						 width="321">
 							<radar_list.columns
 							 label="Name"
diff --git a/indra/newview/skins/default/xui/en/panel_fs_radar.xml b/indra/newview/skins/default/xui/en/panel_fs_radar.xml
index 5abf734c5e..38f3e00ddb 100644
--- a/indra/newview/skins/default/xui/en/panel_fs_radar.xml
+++ b/indra/newview/skins/default/xui/en/panel_fs_radar.xml
@@ -174,6 +174,7 @@
 						 multi_select="true"
 						 content_type="Agents"
 						 persist_sort_order="true"
+						 primary_sort_only="true"
 						 width="321">
 							<radar_list.columns
 							 label="Name"
diff --git a/indra/newview/skins/vintage/xui/en/panel_fs_radar.xml b/indra/newview/skins/vintage/xui/en/panel_fs_radar.xml
index 59e6e53e2f..dd847ed81d 100644
--- a/indra/newview/skins/vintage/xui/en/panel_fs_radar.xml
+++ b/indra/newview/skins/vintage/xui/en/panel_fs_radar.xml
@@ -90,6 +90,7 @@
 				 multi_select="true"
 				 content_type="Agents"
 				 persist_sort_order="true"
+				 primary_sort_only="true"
 				 width="327">
 					<radar_list.columns
 					 label="Name"