diff --git a/data/create_syn_data.py b/data/create_syn_data.py
index 2615235..e40ea15 100644
--- a/data/create_syn_data.py
+++ b/data/create_syn_data.py
@@ -233,7 +233,7 @@ if __name__ == '__main__':
     else:
         if sys.argv[1] == '--resume':
             try:
-                start = max([int(dir) for dir in os.listdir(out_root) if str.isdigit(dir)]) or 0
+                start = max([int(dir) for dir in os.listdir(out_root) if str.isdigit(dir)]) - 1 or 0
             except:
                 pass