diff --git a/src/security/sec-tpm.hpp b/src/security/sec-tpm.hpp
index 15f1770..14b5756 100644
--- a/src/security/sec-tpm.hpp
+++ b/src/security/sec-tpm.hpp
@@ -22,7 +22,8 @@
  *
  * It specifies the interfaces of private/secret key related operations.
  */
-class SecTpm {
+class SecTpm
+{
 public:
   class Error : public std::runtime_error
   {