diff --git a/include/settings/settings_manager.h b/include/settings/settings_manager.h
index 3101f9898a..edf8dde57b 100644
--- a/include/settings/settings_manager.h
+++ b/include/settings/settings_manager.h
@@ -22,6 +22,7 @@
 #define _SETTINGS_MANAGER_H
 
 #include <algorithm>
+#include <mutex>
 #include <shared_mutex>
 #include <typeinfo>
 #include <core/wx_stl_compat.h> // for wxString hash