diff --git a/src/pathfinder/npf/npf.cpp b/src/pathfinder/npf/npf.cpp
--- a/src/pathfinder/npf/npf.cpp
+++ b/src/pathfinder/npf/npf.cpp
@@ -981,7 +981,7 @@ static NPFFoundTargetData NPFRouteIntern
 	start1->user_data[NPF_NODE_FLAGS] = 0;
 	NPFSetFlag(start1, NPF_FLAG_IGNORE_START_TILE, ignore_start_tile1);
 	_npf_aystar.AddStartNode(start1, 0);
-	if (start2) {
+	if (start2 != NULL) {
 		start2->user_data[NPF_TRACKDIR_CHOICE] = INVALID_TRACKDIR;
 		start2->user_data[NPF_NODE_FLAGS] = 0;
 		NPFSetFlag(start2, NPF_FLAG_IGNORE_START_TILE, ignore_start_tile2);