diff --git a/pyaerocom/aeroval/setup_classes.py b/pyaerocom/aeroval/setup_classes.py
index 274d97543..ce9f99491 100644
--- a/pyaerocom/aeroval/setup_classes.py
+++ b/pyaerocom/aeroval/setup_classes.py
@@ -313,7 +313,8 @@ class EvalRunOptions(BaseModel):
     #: If True, process only maps (skip obs evaluation)
     only_model_maps: bool = False
     obs_only: bool = False
-    num_workers: int = 1  #: Number of parallel workers to utilize when parallel processing is available. Currently implemented in :func:`pyaerocom.aeroval.coldatatojson_helpers.py::_process_stats_timeseries_for_all_regions`
+    num_workers: int = 1
+    #: Number of parallel workers to utilize when parallel processing is available. Currently implemented in :func:`pyaerocom.aeroval.coldatatojson_helpers.py::_process_stats_timeseries_for_all_regions`
 
 
 class ProjectInfo(BaseModel):