diff --git a/src/newgrf_gui.cpp b/src/newgrf_gui.cpp
--- a/src/newgrf_gui.cpp
+++ b/src/newgrf_gui.cpp
@@ -1172,7 +1172,7 @@ struct NewGRFWindow : public QueryString
 
 			case SNGRFS_RESCAN_FILES:
 			case SNGRFS_RESCAN_FILES2:
-				TarScanner::DoScan();
+				TarScanner::DoScan(TarScanner::NEWGRF);
 				ScanNewGRFFiles(this);
 				break;
 		}