diff --git a/src/lua_baselib.c b/src/lua_baselib.c
index 525ce89ec..b6adc0ccd 100644
--- a/src/lua_baselib.c
+++ b/src/lua_baselib.c
@@ -28,6 +28,7 @@
 #include "console.h"
 #include "d_netcmd.h" // IsPlayerAdmin
 #include "m_menu.h" // Player Setup menu color stuff
+#include "b_bot.h" // B_UpdateBotleader
 
 #include "lua_script.h"
 #include "lua_libs.h"