diff --git a/src/pymod/tl/tlMain.cc b/src/pymod/tl/tlMain.cc
index 42c21c630..4efb94a35 100644
--- a/src/pymod/tl/tlMain.cc
+++ b/src/pymod/tl/tlMain.cc
@@ -23,3 +23,4 @@
 #include "../pymodHelper.h"
 
 DEFINE_PYMOD(tlcore, "tl", "KLayout core module 'tl'")
+