diff --git a/clearml/automation/controller.py b/clearml/automation/controller.py
index 3fb7b27d..7ec254a4 100644
--- a/clearml/automation/controller.py
+++ b/clearml/automation/controller.py
@@ -146,7 +146,7 @@ class PipelineController(object):
             packages=None,  # type: Optional[Union[str, Sequence[str]]]
             repo=None,  # type: Optional[str]
             repo_branch=None,  # type: Optional[str]
-            repo_commit=None  # type: Optional[str]
+            repo_commit=None,  # type: Optional[str]
             artifact_serialization_function=None,  # type: Optional[Callable[[Any], Union[bytes, bytearray]]]
             artifact_deserialization_function=None  # type: Optional[Callable[[bytes], Any]]
     ):