diff --git a/indra/newview/ascentprefschat.cpp b/indra/newview/ascentprefschat.cpp
index 5def0f4bb..d504a38fa 100644
--- a/indra/newview/ascentprefschat.cpp
+++ b/indra/newview/ascentprefschat.cpp
@@ -297,6 +297,7 @@ void LLPrefsAscentChat::refreshValues()
 	mOneLineConfButt                = gSavedSettings.getBOOL("UseConciseConferenceButtons");
 	mOnlyComm                       = gSavedSettings.getBOOL("CommunicateSpecificShortcut");
 	mItalicizeActions               = gSavedSettings.getBOOL("LiruItalicizeActions");
+	mLegacyLogLaunch                = gSavedSettings.getBOOL("LiruLegacyLogLaunch");
 	mLegacySpeakerNames             = gSavedSettings.getBOOL("LiruLegacySpeakerNames");
 
 	//Autoresponse ------------------------------------------------------------------------
@@ -535,6 +536,7 @@ void LLPrefsAscentChat::cancel()
 	gSavedSettings.setBOOL("UseConciseConferenceButtons",          mOneLineConfButt);
 	gSavedSettings.setBOOL("CommunicateSpecificShortcut",          mOnlyComm);
 	gSavedSettings.setBOOL("LiruItalicizeActions",                 mItalicizeActions);
+	gSavedSettings.setBOOL("LiruLegacyLogLaunch",                  mLegacyLogLaunch);
 	gSavedSettings.setBOOL("LiruLegacySpeakerNames",               mLegacySpeakerNames);
 
 	//Autoresponse ------------------------------------------------------------------------
diff --git a/indra/newview/ascentprefschat.h b/indra/newview/ascentprefschat.h
index 5e0ecd707..f4232bfd8 100644
--- a/indra/newview/ascentprefschat.h
+++ b/indra/newview/ascentprefschat.h
@@ -87,6 +87,7 @@ protected:
 	bool mOnlyComm;
 	bool mItalicizeActions;
 	bool mLegacySpeakerNames;
+	bool mLegacyLogLaunch;
 
 	//Autoresponse ------------------------------------------------------------------------
 	std::string mIMResponseAnyoneItemID;
diff --git a/indra/newview/skins/default/xui/en-us/panel_preferences_ascent_chat.xml b/indra/newview/skins/default/xui/en-us/panel_preferences_ascent_chat.xml
index 82f6429bb..3d2b1325d 100644
--- a/indra/newview/skins/default/xui/en-us/panel_preferences_ascent_chat.xml
+++ b/indra/newview/skins/default/xui/en-us/panel_preferences_ascent_chat.xml
@@ -59,6 +59,7 @@
       <check_box bottom_delta="-20" control_name="UseConciseIMButtons" follows="top" height="16" label="Buttons on the same line as name for IMs (Affects new IMs)" name="im_concise_butt"/>
       <check_box bottom_delta="-20" control_name="UseConciseGroupChatButtons" follows="top" height="16" label="Buttons on group chat name line (Affects new group chats)" name="group_concise_butt"/>
       <check_box bottom_delta="-20" control_name="UseConciseConferenceButtons" follows="top" height="16" label="Buttons on conference title line (Affects new conferences)" name="conf_concise_butt"/>
+      <check_box bottom_delta="-20" follows="top" height="16" control_name="LiruLegacyLogLaunch" label="Log button opens external text editor (Windows only)" name="legacy_log_launch"/>
       <check_box bottom_delta="-20" follows="top" height="16" initial_value="false" label="Disallow communicate shortcut opening detached friends list" control_name="CommunicateSpecificShortcut" name="only_comm"/>
       <check_box bottom_delta="-20" follows="top" height="16" control_name="LiruItalicizeActions" label="Italicize action messages (/me)" name="italicize_actions"/>
   </panel>