diff --git a/geometry.h b/geometry.h
index e4ff522..1ac1b03 100644
--- a/geometry.h
+++ b/geometry.h
@@ -145,6 +145,9 @@ struct Tripoint
     return ret;
   }
 };
+typedef std::vector<Tripoint>   Tripoint1d;
+typedef std::vector<Tripoint1d> Tripoint2d;
+typedef std::vector<Tripoint2d> Tripoint3d;
 
 inline Tripoint operator+(Tripoint lhs, const Tripoint& rhs)
 {
diff --git a/pathfind.cpp b/pathfind.cpp
index 3b353ff..8f26d77 100644
--- a/pathfind.cpp
+++ b/pathfind.cpp
@@ -500,7 +500,7 @@ Path Pathfinder::path_a_star(Tripoint start, Tripoint end)
   A_star_status status[x_size][y_size][z_size];
   int           gscore[x_size][y_size][z_size];
   int           hscore[x_size][y_size][z_size];
-  Tripoint      parent[x_size][y_size][z_size];
+  Tripoint3d    parent(x_size, Tripoint2d(y_size, Tripoint1d(z_size)));
 
   if (border > 0) {
     int x0 = (start.x < end.x ? start.x : end.x);
diff --git a/time.h b/time.h
index 2722648..b8838cc 100644
--- a/time.h
+++ b/time.h
@@ -1,5 +1,5 @@
-#ifndef _TIME_H_
-#define _TIME_H_
+#ifndef _CATTIME_H_
+#define _CATTIME_H_
 
 #include <string>