diff --git a/devito/core/cpu.py b/devito/core/cpu.py
index 76de920bc9..a1ca16cfd8 100644
--- a/devito/core/cpu.py
+++ b/devito/core/cpu.py
@@ -155,7 +155,7 @@ def _specialize_clusters(cls, clusters, **kwargs):
         options = kwargs['options']
         platform = kwargs['platform']
         sregistry = kwargs['sregistry']
-       
+
         # Toposort+Fusion (the former to expose more fusion opportunities)
         clusters = fuse(clusters, toposort=True)