diff --git a/src/core/Projector.js b/src/core/Projector.js
index 4564d87ee24645056c438c11fc7bb1b087b289e5..fe52a284f953d6e69289e7161dea47da44aa85a9 100644
--- a/src/core/Projector.js
+++ b/src/core/Projector.js
@@ -579,6 +579,8 @@ THREE.Projector = function () {
 
 					vertices = object.geometry.vertices;
 
+					if ( vertices.length === 0 ) continue;
+
 					v1 = getNextVertexInPool();
 					v1.positionScreen.copy( vertices[ 0 ] ).applyMatrix4( _modelViewProjectionMatrix );