diff --git a/modules/gridmap/editor/grid_map_editor_plugin.cpp b/modules/gridmap/editor/grid_map_editor_plugin.cpp
index 214d4d8ec22..541a95ab6f5 100644
--- a/modules/gridmap/editor/grid_map_editor_plugin.cpp
+++ b/modules/gridmap/editor/grid_map_editor_plugin.cpp
@@ -913,7 +913,7 @@ void GridMapEditor::update_palette() {
 }
 
 void GridMapEditor::edit(GridMap *p_gridmap) {
-	if (node) {
+	if (node && node->is_connected("cell_size_changed", callable_mp(this, &GridMapEditor::_draw_grids))) {
 		node->disconnect("cell_size_changed", callable_mp(this, &GridMapEditor::_draw_grids));
 	}