diff --git a/editor/plugins/node_3d_editor_plugin.cpp b/editor/plugins/node_3d_editor_plugin.cpp
index 9f710d218c7..3e8547439f2 100644
--- a/editor/plugins/node_3d_editor_plugin.cpp
+++ b/editor/plugins/node_3d_editor_plugin.cpp
@@ -4141,6 +4141,10 @@ Node3DEditorViewport::Node3DEditorViewport(Node3DEditor *p_spatial_editor, Edito
 	EditorSettings::get_singleton()->connect("settings_changed", callable_mp(this, &Node3DEditorViewport::update_transform_gizmo_view));
 }
 
+Node3DEditorViewport::~Node3DEditorViewport() {
+	memdelete(frame_time_gradient);
+}
+
 //////////////////////////////////////////////////////////////
 
 void Node3DEditorViewportContainer::_gui_input(const Ref<InputEvent> &p_event) {
diff --git a/editor/plugins/node_3d_editor_plugin.h b/editor/plugins/node_3d_editor_plugin.h
index 624bc2d88ad..0cefaa65575 100644
--- a/editor/plugins/node_3d_editor_plugin.h
+++ b/editor/plugins/node_3d_editor_plugin.h
@@ -483,6 +483,7 @@ public:
 	Camera3D *get_camera() { return camera; } // return the default camera object.
 
 	Node3DEditorViewport(Node3DEditor *p_spatial_editor, EditorNode *p_editor, int p_index);
+	~Node3DEditorViewport();
 };
 
 class Node3DEditorSelectedItem : public Object {