diff --git a/src/quit_confirmation.hpp b/src/quit_confirmation.hpp
index bbbe5f4c4aed..25376b271e76 100644
--- a/src/quit_confirmation.hpp
+++ b/src/quit_confirmation.hpp
@@ -18,6 +18,7 @@ class CVideo;
 
 #include <cassert>
 #include <vector>
+#include <string>
 
 #include "utils/functional.hpp"
 
diff --git a/src/synced_commands.hpp b/src/synced_commands.hpp
index c4559a4e00ea..5b74e72ad858 100644
--- a/src/synced_commands.hpp
+++ b/src/synced_commands.hpp
@@ -16,6 +16,7 @@
 
 #include <map>
 #include <exception>
+#include <string>
 
 #include "utils/functional.hpp"