diff --git a/paddlex/command.py b/paddlex/command.py
index 4fde4b879c55eb4a278b9089fa4b4b9b0d38c7a5..a433cbcfb8f308470e27b0bc31d4d55ef7a3c29c 100644
--- a/paddlex/command.py
+++ b/paddlex/command.py
@@ -189,7 +189,7 @@ def main():
 
     if args.split_dataset:
         assert args.dataset_dir is not None, "--dataset_dir should be defined while spliting dataset"
-        assert args.format is not None, "--form should be defined while spliting dataset"
+        assert args.format is not None, "--format should be defined while spliting dataset"
         assert args.val_value is not None, "--val_value should be defined while spliting dataset"
 
         dataset_dir = args.dataset_dir