diff --git a/compat/compat.h.in b/compat/compat.h.in
index 6df7a7b..0fa2fe7 100644
--- a/compat/compat.h.in
+++ b/compat/compat.h.in
@@ -3,7 +3,7 @@
  * @author Michal Vasko <mvasko@cesnet.cz>
  * @brief compatibility functions header
  *
- * Copyright (c) 2021 CESNET, z.s.p.o.
+ * Copyright (c) 2021 - 2023 CESNET, z.s.p.o.
  *
  * This source code is licensed under BSD 3-Clause License (the "License").
  * You may not use this file except in compliance with the License.
@@ -65,8 +65,6 @@
 #cmakedefine HAVE_STRCHRNUL
 #cmakedefine HAVE_GET_CURRENT_DIR_NAME
 #cmakedefine HAVE_PTHREAD_MUTEX_TIMEDLOCK
-#cmakedefine HAVE_TM_GMTOFF
-#cmakedefine HAVE_TIME_H_TIMEZONE
 #cmakedefine HAVE_REALPATH
 #cmakedefine HAVE_LOCALTIME_R
 #cmakedefine HAVE_GMTIME_R
@@ -189,6 +187,10 @@
 struct tm *localtime_r(const time_t *timep, struct tm *result);
 #endif
 
+#ifndef HAVE_GMTIME_R
+struct tm *gmtime_r(const time_t *timep, struct tm *result);
+#endif
+
 #ifndef HAVE_TIMEGM
 # if defined (_WIN32)
 #  define timegm _mkgmtime