diff --git a/source/blender/makesrna/intern/rna_node_tree_interface.cc b/source/blender/makesrna/intern/rna_node_tree_interface.cc
index b8fb2c698d8..e63e2697e18 100644
--- a/source/blender/makesrna/intern/rna_node_tree_interface.cc
+++ b/source/blender/makesrna/intern/rna_node_tree_interface.cc
@@ -530,32 +530,19 @@ static bNodeTreeInterfaceSocket *rna_NodeTreeInterfaceItems_new_socket(
   return socket;
 }
 
-static bNodeTreeInterfacePanel *rna_NodeTreeInterfaceItems_new_panel(
-    ID *id,
-    bNodeTreeInterface *interface,
-    Main *bmain,
-    ReportList *reports,
-    const char *name,
-    const char *description,
-    bool default_closed,
-    bNodeTreeInterfacePanel *parent)
+static bNodeTreeInterfacePanel *rna_NodeTreeInterfaceItems_new_panel(ID *id,
+                                                                     bNodeTreeInterface *interface,
+                                                                     Main *bmain,
+                                                                     ReportList *reports,
+                                                                     const char *name,
+                                                                     const char *description,
+                                                                     bool default_closed)
 {
-  if (parent != nullptr) {
-    if (!interface->find_item(parent->item)) {
-      BKE_report(reports, RPT_ERROR_INVALID_INPUT, "Parent is not part of the interface");
-      return nullptr;
-    }
-    if (!(parent->flag & NODE_INTERFACE_PANEL_ALLOW_CHILD_PANELS)) {
-      BKE_report(reports, RPT_WARNING, "Parent panel does not allow child panels");
-      return nullptr;
-    }
-  }
-
   NodeTreeInterfacePanelFlag flag = NodeTreeInterfacePanelFlag(0);
   SET_FLAG_FROM_TEST(flag, default_closed, NODE_INTERFACE_PANEL_DEFAULT_CLOSED);
 
   bNodeTreeInterfacePanel *panel = interface->add_panel(
-      name ? name : "", description ? description : "", flag, parent);
+      name ? name : "", description ? description : "", flag, nullptr);
 
   if (panel == nullptr) {
     BKE_report(reports, RPT_ERROR, "Unable to create panel");
@@ -1178,11 +1165,6 @@ static void rna_def_node_tree_interface_items_api(StructRNA *srna)
   RNA_def_boolean(
       func, "default_closed", false, "Default Closed", "Panel is closed by default on new nodes");
   RNA_def_parameter_flags(parm, PropertyFlag(0), PARM_REQUIRED);
-  RNA_def_pointer(func,
-                  "parent",
-                  "NodeTreeInterfacePanel",
-                  "Parent",
-                  "Add panel as a child of the parent panel");
   /* return value */
   parm = RNA_def_pointer(func, "item", "NodeTreeInterfacePanel", "Panel", "New panel");
   RNA_def_function_return(func, parm);
diff --git a/tests/python/bl_node_group_interface.py b/tests/python/bl_node_group_interface.py
index aa993d18ae3..a7b8635cfd9 100644
--- a/tests/python/bl_node_group_interface.py
+++ b/tests/python/bl_node_group_interface.py
@@ -272,13 +272,6 @@ class NodeGroupInterfaceTests:
         self.assertSequenceEqual([s.name for s in group_node.inputs], ["Input 0", "Input 1"])
         self.assertSequenceEqual([s.name for s in group_node.outputs], ["Output 0", "Output 1"])
 
-        # Nested panel is not allowed and should return None.
-        panel1 = tree.interface.new_panel("Panel 1", parent=panel0)
-        self.assertIsNone(panel1)
-        self.assertSequenceEqual(tree.interface.items_tree, [out0, in0, panel0, out1, in1])
-        self.assertSequenceEqual([s.name for s in group_node.inputs], ["Input 0", "Input 1"])
-        self.assertSequenceEqual([s.name for s in group_node.outputs], ["Output 0", "Output 1"])
-
     def do_test_remove(self, socket_type):
         tree, group_node = self.make_group_and_instance()