diff --git a/src/openttd.h b/src/openttd.h
--- a/src/openttd.h
+++ b/src/openttd.h
@@ -61,6 +61,7 @@ enum PauseMode {
 	PM_PAUSED_JOIN           = 1 << 2, ///< A game paused for 'pause_on_join'
 	PM_PAUSED_ERROR          = 1 << 3, ///< A game paused because a (critical) error
 	PM_PAUSED_ACTIVE_CLIENTS = 1 << 4, ///< A game paused for 'min_active_clients'
+	PM_PAUSED_GAME_SCRIPT    = 1 << 5, ///< A game paused by a game script
 
 	/** Pause mode bits when paused for network reasons. */
 	PMB_PAUSED_NETWORK = PM_PAUSED_ACTIVE_CLIENTS | PM_PAUSED_JOIN,