diff --git a/src/register/hei_operator_register.hpp b/src/register/hei_operator_register.hpp
index ee2519c..6161ed1 100755
--- a/src/register/hei_operator_register.hpp
+++ b/src/register/hei_operator_register.hpp
@@ -1,3 +1,4 @@
+// clang-format off
 #pragma once
 
 #include <algorithm>
@@ -437,4 +438,4 @@
 };
 
 } // end namespace libhei
-
+// clang-format on