diff --git a/include/bounce/collision/shapes/qhull.h b/include/bounce/collision/shapes/qhull.h
index 42f3c66..25836de 100644
--- a/include/bounce/collision/shapes/qhull.h
+++ b/include/bounce/collision/shapes/qhull.h
@@ -32,13 +32,13 @@ struct b3QHull : public b3Hull
 
 	b3QHull()
 	{
-		vertices = hullVertices.Begin();
+		vertices = nullptr;
 		vertexCount = 0;
-		edges = hullEdges.Begin();
+		edges = nullptr;
 		edgeCount = 0;
-		faces = hullFaces.Begin();
+		faces = nullptr;
 		faceCount = 0;
-		planes = hullPlanes.Begin();
+		planes = nullptr;
 		centroid.SetZero();
 	}
 
diff --git a/src/bounce/collision/shapes/qhull.cpp b/src/bounce/collision/shapes/qhull.cpp
index b4e1541..1c5b259 100644
--- a/src/bounce/collision/shapes/qhull.cpp
+++ b/src/bounce/collision/shapes/qhull.cpp
@@ -338,8 +338,12 @@ void b3QHull::Set(u32 vtxStride, const void* vtxBase, u32 vtxCount, bool simplif
 		++iface;
 	}
 
+	vertices = hullVertices.Begin();
 	vertexCount = hullVertices.Count();
+	edges = hullEdges.Begin();
 	edgeCount = hullEdges.Count();
+	faces = hullFaces.Begin();
+	planes = hullPlanes.Begin();
 	faceCount = hullFaces.Count();
 
 	// Validate