diff --git a/slither/__main__.py b/slither/__main__.py
index 808bc5e32..3be86abf6 100644
--- a/slither/__main__.py
+++ b/slither/__main__.py
@@ -246,7 +246,7 @@ def main_impl(all_detector_classes, all_printer_classes):
             number_contracts = 0
             results = []
             if args.splitted and args.solc_ast:
-                results = process_files(filenames, args, detector_classes, printer_classes)
+                (results, number_contracts) = process_files(filenames, args, detector_classes, printer_classes)
             else:
                 for filename in filenames:
                     (results_tmp, number_contracts_tmp) = process(filename, args, detector_classes, printer_classes)