diff --git a/retroshare-gui/src/gui/gxsforums/GxsForumModel.cpp b/retroshare-gui/src/gui/gxsforums/GxsForumModel.cpp
index 77292dadf..d793c29fe 100644
--- a/retroshare-gui/src/gui/gxsforums/GxsForumModel.cpp
+++ b/retroshare-gui/src/gui/gxsforums/GxsForumModel.cpp
@@ -1278,8 +1278,8 @@ void RsGxsForumModel::recursSetMsgReadStatus(ForumModelIndex i,bool read_status,
         void *ref ;
         convertTabEntryToRefPointer(i,ref);	// we dont use i+1 here because i is not a row, but an index in the mPosts tab
 
-        QModelIndex itemIndex = createIndex(i - 1, 0, ref);
-		emit dataChanged(itemIndex, itemIndex);
+        QModelIndex itemIndex = (mTreeMode == TREE_MODE_FLAT)?createIndex(i - 1, 0, ref):createIndex(mPosts[i].prow,0,ref);
+        emit dataChanged(itemIndex, itemIndex);
 	}
 
 	if(!with_children)