diff --git a/marl_eval/json_tools/json_logger.py b/marl_eval/json_tools/json_logger.py
index 38bb8595..f9511cba 100644
--- a/marl_eval/json_tools/json_logger.py
+++ b/marl_eval/json_tools/json_logger.py
@@ -79,7 +79,7 @@ def write(
         evaluation_step: Optional[int] = None,
         is_absolute_metric: bool = False,
     ) -> None:
-        """Writes a step to the json reporting file
+        """Writes a step to the json reporting file.
 
         Args:
             timestep (int): the current environment timestep