diff --git a/modules/gridmap/editor/grid_map_editor_plugin.cpp b/modules/gridmap/editor/grid_map_editor_plugin.cpp
index 8086539052..ea90a03678 100644
--- a/modules/gridmap/editor/grid_map_editor_plugin.cpp
+++ b/modules/gridmap/editor/grid_map_editor_plugin.cpp
@@ -42,6 +42,7 @@
 #include "editor/editor_undo_redo_manager.h"
 #include "editor/gui/editor_zoom_widget.h"
 #include "editor/gui/filter_line_edit.h"
+#include "editor/inspector/editor_resource_preview.h"
 #include "editor/scene/3d/mesh_library_editor_plugin.h"
 #include "editor/scene/3d/node_3d_editor_plugin.h"
 #include "editor/settings/editor_command_palette.h"
@@ -1138,7 +1139,14 @@ void GridMapEditor::update_palette() {
 		if (preview.is_valid()) {
 			mesh_library_palette->set_item_icon(item, preview);
 			mesh_library_palette->set_item_tooltip(item, name);
+		} else {
+			Ref<Mesh> mesh = mesh_library->get_item_mesh(id);
+			if (mesh.is_valid()) {
+				// Fallback to the item's mesh preview.
+				EditorResourcePreview::get_singleton()->queue_edited_resource_preview(mesh, callable_mp(this, &GridMapEditor::_update_resource_preview).bind(item));
+			}
 		}
+
 		mesh_library_palette->set_item_text(item, name);
 		mesh_library_palette->set_item_metadata(item, id);
 
@@ -1150,6 +1158,12 @@ void GridMapEditor::update_palette() {
 	}
 }
 
+void GridMapEditor::_update_resource_preview(const String &p_path, const Ref<Texture2D> &p_preview, const Ref<Texture2D> &p_small_preview, int p_idx) {
+	if (p_idx < mesh_library_palette->get_item_count()) {
+		mesh_library_palette->set_item_icon(p_idx, p_preview);
+	}
+}
+
 void GridMapEditor::_update_mesh_library() {
 	ERR_FAIL_NULL(node);
 
diff --git a/modules/gridmap/editor/grid_map_editor_plugin.h b/modules/gridmap/editor/grid_map_editor_plugin.h
index de7cbabec5..5e9e87643b 100644
--- a/modules/gridmap/editor/grid_map_editor_plugin.h
+++ b/modules/gridmap/editor/grid_map_editor_plugin.h
@@ -219,11 +219,12 @@ class GridMapEditor : public EditorDock {
 	ItemList *mesh_library_palette = nullptr;
 	Label *info_message = nullptr;
 
-	void update_grid(); // Change which and where the grid is displayed
+	void update_grid(); // Change which and where the grid is displayed.
 	void _draw_grids(const Vector3 &cell_size);
 	void _configure();
 	void _menu_option(int);
 	void update_palette();
+	void _update_resource_preview(const String &p_path, const Ref<Texture2D> &p_preview, const Ref<Texture2D> &p_small_preview, int p_idx);
 	void _update_mesh_library();
 	void _set_display_mode(int p_mode);
 	void _item_selected_cbk(int idx);