diff --git a/src/openttd.cpp b/src/openttd.cpp
index 012c1376e9..27336705ce 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -1568,7 +1568,12 @@ void CheckCaches(bool force_check, std::function<void(const char *)> log)
 			}
 			if (veh_cache[length].cached_max_speed != u->vcache.cached_max_speed || veh_cache[length].cached_cargo_age_period != u->vcache.cached_cargo_age_period ||
 					veh_cache[length].cached_vis_effect != u->vcache.cached_vis_effect || HasBit(veh_cache[length].cached_veh_flags ^ u->vcache.cached_veh_flags, VCF_LAST_VISUAL_EFFECT)) {
-				CCLOG("vehicle cache mismatch: type %i, vehicle %i, company %i, unit number %i, wagon %i", (int)v->type, v->index, (int)v->owner, v->unitnumber, length);
+				CCLOG("vehicle cache mismatch: %c%c%c%c, type %i, vehicle %i, company %i, unit number %i, wagon %i",
+						veh_cache[length].cached_max_speed != u->vcache.cached_max_speed ? 'm' : '-',
+						veh_cache[length].cached_cargo_age_period != u->vcache.cached_cargo_age_period ? 'c' : '-',
+						veh_cache[length].cached_vis_effect != u->vcache.cached_vis_effect ? 'v' : '-',
+						HasBit(veh_cache[length].cached_veh_flags ^ u->vcache.cached_veh_flags, VCF_LAST_VISUAL_EFFECT) ? 'l' : '-',
+						(int)v->type, v->index, (int)v->owner, v->unitnumber, length);
 			}
 			if (u->IsGroundVehicle() && (HasBit(u->GetGroundVehicleFlags(), GVF_GOINGUP_BIT) || HasBit(u->GetGroundVehicleFlags(), GVF_GOINGDOWN_BIT)) && u->GetGroundVehicleCache()->cached_slope_resistance && HasBit(v->vcache.cached_veh_flags, VCF_GV_ZERO_SLOPE_RESIST)) {
 				CCLOG("VCF_GV_ZERO_SLOPE_RESIST set incorrectly (2): type %i, vehicle %i, company %i, unit number %i, wagon %i", (int)v->type, v->index, (int)v->owner, v->unitnumber, length);