diff --git a/src/game_events/action_wml.cpp b/src/game_events/action_wml.cpp
index 2d7b4de4bd21..ded7853371ca 100644
--- a/src/game_events/action_wml.cpp
+++ b/src/game_events/action_wml.cpp
@@ -64,8 +64,6 @@
 #include "whiteboard/manager.hpp"
 #include "deprecation.hpp"
 
-#include <boost/regex.hpp>
-
 static lg::log_domain log_engine("engine");
 #define DBG_NG LOG_STREAM(debug, log_engine)
 #define LOG_NG LOG_STREAM(info, log_engine)