diff --git a/tools/mass_update.py b/tools/mass_update.py
index 431b48b5..d7e29f0f 100755
--- a/tools/mass_update.py
+++ b/tools/mass_update.py
@@ -2,7 +2,7 @@
 
 """
 mass_update.py - Mass update uTun servers via SSH
-Usage: python3 mass_update.py [fast|full] [-c config] [-j jobs]
+Usage: python3 mass_update.py [fast|full] [-c config] [-j jobs]  (default: fast)
 
 Config format (JSON):
 {
@@ -124,8 +124,10 @@ def main():
     )
     parser.add_argument(
         "command",
+        nargs='?',
+        default="fast",
         choices=["fast", "full"],
-        help="Update mode: fast (make) or full (autotools rebuild)"
+        help="Update mode: fast (make) or full (autotools rebuild) (default: fast)"
     )
     parser.add_argument(
         "-c", "--config",