diff --git a/src/main.cc b/src/main.cc
index 48d1c1a..7af8d42 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -414,3 +414,4 @@ PyMODINIT_FUNC PyInit_permanent(void)
 #undef PERMANENT_GIT_COMMIT_BRANCH
 #undef PERMANENT_BUILD_TIME
 #undef PERMANENT_COMPILER_VERSION
+