diff --git a/indra/newview/llfloaterpreference.cpp b/indra/newview/llfloaterpreference.cpp
index ce96a1092d..df28c17beb 100644
--- a/indra/newview/llfloaterpreference.cpp
+++ b/indra/newview/llfloaterpreference.cpp
@@ -3621,9 +3621,11 @@ BOOL LLPanelPreference::postBuild()
 	// <FS:Ansariel> Only enable Growl checkboxes if Growl is usable
 	if (hasChild("notify_growl_checkbox", TRUE))
 	{
+		BOOL growl_enabled = gSavedSettings.getBOOL("FSEnableGrowl") && GrowlManager::isUsable();
 		getChild<LLCheckBoxCtrl>("notify_growl_checkbox")->setCommitCallback(boost::bind(&LLPanelPreference::onEnableGrowlChanged, this));
 		getChild<LLCheckBoxCtrl>("notify_growl_checkbox")->setEnabled(GrowlManager::isUsable());
-		getChild<LLCheckBoxCtrl>("notify_growl_always_checkbox")->setEnabled(gSavedSettings.getBOOL("FSEnableGrowl") && GrowlManager::isUsable());
+		getChild<LLCheckBoxCtrl>("notify_growl_always_checkbox")->setEnabled(growl_enabled);
+		getChild<LLCheckBoxCtrl>("FSFilterGrowlKeywordDuplicateIMs")->setEnabled(growl_enabled);
 	}
 	// </FS:Ansariel>
 
@@ -3727,7 +3729,9 @@ void LLPanelPreference::handleFavoritesOnLoginChanged(LLUICtrl* checkbox, const
 // <FS:Ansariel> Only enable Growl checkboxes if Growl is usable
 void LLPanelPreference::onEnableGrowlChanged()
 {
-	getChild<LLCheckBoxCtrl>("notify_growl_always_checkbox")->setEnabled(gSavedSettings.getBOOL("FSEnableGrowl") && GrowlManager::isUsable());
+	BOOL growl_enabled = gSavedSettings.getBOOL("FSEnableGrowl") && GrowlManager::isUsable();
+	getChild<LLCheckBoxCtrl>("notify_growl_always_checkbox")->setEnabled(growl_enabled);
+	getChild<LLCheckBoxCtrl>("FSFilterGrowlKeywordDuplicateIMs")->setEnabled(growl_enabled);
 }
 // </FS:Ansariel>