diff --git a/src/pathfinder/follow_track.hpp b/src/pathfinder/follow_track.hpp
index d9a70b7fca..a8399cd9f6 100644
--- a/src/pathfinder/follow_track.hpp
+++ b/src/pathfinder/follow_track.hpp
@@ -73,7 +73,8 @@ struct CFollowTrackT
 
 	inline void Init(Owner o, RailTypes railtype_override, CPerformanceTimer *pPerf)
 	{
-		assert((!IsRoadTT() || m_veh != NULL) && (!IsRailTT() || railtype_override != INVALID_RAILTYPES));
+		assert(!IsRoadTT() || m_veh != NULL);
+		assert(!IsRailTT() || railtype_override != INVALID_RAILTYPES);
 		m_veh_owner = o;
 		m_pPerf = pPerf;
 		/* don't worry, all is inlined so compiler should remove unnecessary initializations */