diff --git a/src/newgrf_gui.cpp b/src/newgrf_gui.cpp
index 81fb85560b..8ecdb1d657 100644
--- a/src/newgrf_gui.cpp
+++ b/src/newgrf_gui.cpp
@@ -1171,7 +1171,7 @@ struct NewGRFWindow : public Window, NewGRFScanCallback {
 
 	void OnDropdownSelect(int widget, int index) override
 	{
-		if (widget >= 0) return;
+		if (widget != WID_NS_PRESET_LIST) return;
 		if (!this->editable) return;
 
 		ClearGRFConfigList(&this->actives);