diff --git a/src/processing.hpp b/src/processing.hpp
index 114b502..0810312 100644
--- a/src/processing.hpp
+++ b/src/processing.hpp
@@ -5,6 +5,7 @@
 
 #include <boost/container/flat_map.hpp>
 #include <boost/container/flat_set.hpp>
+
 #include <cassert>
 #include <string>