diff --git a/jaxpm/painting.py b/jaxpm/painting.py
index 5631e73..01e153a 100644
--- a/jaxpm/painting.py
+++ b/jaxpm/painting.py
@@ -69,3 +69,4 @@ def compensate_cic(field):
     delta_k = jaxpm.ops.fftn(field)
     delta_k = cic_compensation(kvec) * delta_k
     return jaxpm.ops.ifftn(delta_k).real
+
diff --git a/notebooks/Introduction.ipynb b/notebooks/Introduction.ipynb
index b1ef596..0ca27ac 100644
--- a/notebooks/Introduction.ipynb
+++ b/notebooks/Introduction.ipynb
@@ -202,4 +202,4 @@
   },
   "nbformat": 4,
   "nbformat_minor": 5
-}
\ No newline at end of file
+}