diff --git a/cara/models.py b/cara/models.py
index 7addbaa8..8a850c83 100644
--- a/cara/models.py
+++ b/cara/models.py
@@ -1304,4 +1304,5 @@ class ExposureModel:
             self, {'concentration_model.infected.number': 1}
         )
 
-        return single_exposure_model.expected_new_cases()
\ No newline at end of file
+        return single_exposure_model.expected_new_cases()
+        
\ No newline at end of file