diff --git a/python/source.py b/python/source.py
index 8846d1b8d..87c4d2669 100644
--- a/python/source.py
+++ b/python/source.py
@@ -1054,4 +1054,4 @@ def add_source(self, sim):
             self.amp_arr,
             self.needs_boundary_fix,
         )
-        return
\ No newline at end of file
+        return