diff --git a/src/Prep/Terra/GreedyInsert.cc b/src/Prep/Terra/GreedyInsert.cc
index 22be0b6f..b60d14cc 100644
--- a/src/Prep/Terra/GreedyInsert.cc
+++ b/src/Prep/Terra/GreedyInsert.cc
@@ -24,7 +24,7 @@ void TrackedTriangle::update(Subdivision& s)
 GreedySubdivision::GreedySubdivision(Map *map)
 {
     H = map;
-    heap = new Heap(128);
+    heap = new Heap(16384);
 
     int w = H->width;
     int h = H->height;