diff --git a/jobs/prepare_data.py b/jobs/prepare_data.py
index 55f1a1a0..28d1d65e 100644
--- a/jobs/prepare_data.py
+++ b/jobs/prepare_data.py
@@ -384,7 +384,8 @@ def main(starttime, hstart, hstop, cfg, model_cfg):
                 # Merge GEOSP-dataset with other timesteps
                 elif (time.hour != 0):
                     # Change values of time dimension to current time
-                    da_geosp = da_geosp.assign_coords(time=[np.datetime64(time)])
+                    da_geosp = da_geosp.assign_coords(
+                        time=[np.datetime64(time)])
                     # Merge GEOSP into temporary file
                     ds_merged = xr.merge([ds, da_geosp])
                     ds_merged.attrs = ds.attrs