diff --git a/indra/newview/llpreviewnotecard.cpp b/indra/newview/llpreviewnotecard.cpp
index 9dd6a7cf76..a7e223bead 100644
--- a/indra/newview/llpreviewnotecard.cpp
+++ b/indra/newview/llpreviewnotecard.cpp
@@ -343,6 +343,7 @@ void LLPreviewNotecard::loadAsset()
 		if((allow_modify || is_owner) && !source_library)
 		{
 			getChildView("Delete")->setEnabled(TRUE);
+			getChildView("Edit")->setEnabled(FALSE); // <FS:LO> Don't enable external editor button on no mod notecards.
 		}
 	}
 	else