diff --git a/source/blender/editors/space_node/link_drag_search.cc b/source/blender/editors/space_node/link_drag_search.cc
index cf18616b9e9..85ba429ef55 100644
--- a/source/blender/editors/space_node/link_drag_search.cc
+++ b/source/blender/editors/space_node/link_drag_search.cc
@@ -87,16 +87,14 @@ static void add_reroute_node_fn(nodes::LinkSearchOpParams &params)
 static void add_group_input_node_fn(nodes::LinkSearchOpParams &params)
 {
   /* Add a group input based on the connected socket, and add a new group input node. */
-  const eNodeSocketInOut in_out = eNodeSocketInOut(params.socket.in_out);
-  NodeTreeInterfaceSocketFlag flag = NodeTreeInterfaceSocketFlag(0);
-  SET_FLAG_FROM_TEST(flag, in_out & SOCK_IN, NODE_INTERFACE_SOCKET_INPUT);
-  SET_FLAG_FROM_TEST(flag, in_out & SOCK_OUT, NODE_INTERFACE_SOCKET_OUTPUT);
   bNodeTreeInterfaceSocket *socket_iface = params.node_tree.tree_interface.add_socket(
       params.socket.name,
       params.socket.description,
       params.socket.typeinfo->idname,
-      flag,
+      NODE_INTERFACE_SOCKET_INPUT,
       nullptr);
+  BKE_ntree_update_tag_interface(&params.node_tree);
+
   bNode &group_input = params.add_node("NodeGroupInput");
 
   /* This is necessary to create the new sockets in the other input nodes. */
@@ -105,7 +103,8 @@ static void add_group_input_node_fn(nodes::LinkSearchOpParams &params)
   /* Hide the new input in all other group input nodes, to avoid making them taller. */
   for (bNode *node : params.node_tree.all_nodes()) {
     if (node->type == NODE_GROUP_INPUT) {
-      bNodeSocket *new_group_input_socket = nodeFindSocket(node, in_out, socket_iface->identifier);
+      bNodeSocket *new_group_input_socket = nodeFindSocket(
+          node, SOCK_OUT, socket_iface->identifier);
       if (new_group_input_socket) {
         new_group_input_socket->flag |= SOCK_HIDDEN;
       }
@@ -117,7 +116,7 @@ static void add_group_input_node_fn(nodes::LinkSearchOpParams &params)
     socket->flag |= SOCK_HIDDEN;
   }
 
-  bNodeSocket *socket = nodeFindSocket(&group_input, in_out, socket_iface->identifier);
+  bNodeSocket *socket = nodeFindSocket(&group_input, SOCK_OUT, socket_iface->identifier);
   if (socket) {
     /* Unhide the socket for the new input in the new node and make a connection to it. */
     socket->flag &= ~SOCK_HIDDEN;