diff --git a/src/registration_states.h b/src/registration_states.h
index d4c4aa248e40b67d352dd5e4951b8f36dead1b95..18965d9d10e57eec5ca153f60d0d84219fe0965f 100644
--- a/src/registration_states.h
+++ b/src/registration_states.h
@@ -19,8 +19,7 @@
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
  */
 
-#ifndef REGISTRATION_STATES_H_
-#define REGISTRATION_STATES_H_
+#pragma once
 
 #ifdef REGISTERED
 #undef REGISTERED
@@ -43,5 +42,3 @@ enum class RegistrationState {
 };
 
 } // namespace jami
-
-#endif // REGISTRATION_STATES_H_