diff --git a/pvnet/data/datamodule.py b/pvnet/data/datamodule.py
index f2d747e5..f1128155 100644
--- a/pvnet/data/datamodule.py
+++ b/pvnet/data/datamodule.py
@@ -101,7 +101,8 @@ def _get_streamed_samples_dataset(self, start_time, end_time) -> Dataset:
             return SitesDataset(self.configuration, start_time=start_time, end_time=end_time)
         else:
             raise ValueError(
-                f"Unknown renewable: {self.configuration.renewable}, renewable value should either be uk_pv or site"
+                f"Unknown renewable: {self.configuration.renewable},
+                  renewable value should either be uk_pv or site"
             )
 
     def _get_premade_samples_dataset(self, subdir) -> Dataset: