diff --git a/indra/llcommon/llchat.h b/indra/llcommon/llchat.h
index 2823b770db..7f196c9fd3 100644
--- a/indra/llcommon/llchat.h
+++ b/indra/llcommon/llchat.h
@@ -64,7 +64,8 @@ typedef enum e_chat_style
 {
 	CHAT_STYLE_NORMAL,
 	CHAT_STYLE_IRC,
-	CHAT_STYLE_HISTORY
+	CHAT_STYLE_HISTORY,
+	CHAT_STYLE_MODERATOR
 }EChatStyle;
 
 // A piece of chat
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index cb06f3914f..e76ba4aa93 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -13552,5 +13552,16 @@ Change of this parameter will affect the layout of buttons in notification toast
     <key>Value</key>
     <string></string>
   </map>
+  <key>PhoenixBoldGroupMods</key>
+  <map>
+    <key>Comment</key>
+    <string>Boldify moderators' text in group chat</string>
+    <key>Persist</key>
+    <integer>1</integer>
+    <key>Type</key>
+    <string>Boolean</string>
+    <key>Value</key>
+    <integer>1</integer>
+  </map>
 </map>
 </llsd>
diff --git a/indra/newview/llchathistory.cpp b/indra/newview/llchathistory.cpp
index 4e79590a25..d0575bf7b9 100644
--- a/indra/newview/llchathistory.cpp
+++ b/indra/newview/llchathistory.cpp
@@ -833,6 +833,12 @@ void LLChatHistory::appendMessage(const LLChat& chat, const LLSD &args, const LL
 		style_params.color(LLColor4::grey);
 		style_params.readonly_color(LLColor4::grey);
 	}
+	
+	// Bold group moderators' chat -KC 
+	if (chat.mChatStyle == CHAT_STYLE_MODERATOR)
+	{
+		style_params.font.style = irc_me ? "ITALICBOLD" : "BOLD";
+	}
 
 	if (use_plain_text_chat_history)
 	{		
diff --git a/indra/newview/llimfloater.cpp b/indra/newview/llimfloater.cpp
index bf37968f8c..d279c5f705 100644
--- a/indra/newview/llimfloater.cpp
+++ b/indra/newview/llimfloater.cpp
@@ -1070,6 +1070,7 @@ void LLIMFloater::sessionInitReplyReceived(const LLUUID& im_session_id)
 void LLIMFloater::updateMessages()
 {
 	bool use_plain_text_chat_history = gSavedSettings.getBOOL("PlainTextChatHistory");
+	bool bold_mods_chat = gSavedSettings.getBOOL("PhoenixBoldGroupMods");
 
 	std::list<LLSD> messages;
 
@@ -1087,6 +1088,9 @@ void LLIMFloater::updateMessages()
 	{
 		LLSD chat_args;
 		chat_args["use_plain_text_chat_history"] = use_plain_text_chat_history;
+		
+		LLIMModel::LLIMSession* pIMSession = LLIMModel::instance().findIMSession(mSessionID);
+		RLV_ASSERT(pIMSession);
 
 		std::ostringstream message;
 		std::list<LLSD>::const_reverse_iterator iter = messages.rbegin();
@@ -1107,6 +1111,16 @@ void LLIMFloater::updateMessages()
 			chat.mFromName = from;
 			chat.mTimeStr = time;
 			chat.mChatStyle = is_history ? CHAT_STYLE_HISTORY : chat.mChatStyle;
+			
+			// Bold group moderators' chat -KC
+			if (!is_history && bold_mods_chat && pIMSession && pIMSession->mSpeakers)
+			{
+				LLPointer<LLSpeaker> speakerp = pIMSession->mSpeakers->findSpeaker(from_id);
+				if (speakerp && speakerp->mIsModerator)
+				{
+					chat.mChatStyle = CHAT_STYLE_MODERATOR;
+				}
+			}
 
 			// process offer notification
 			if (msg.has("notification_id"))