diff --git a/src/extras/helpers/CameraHelper.js b/src/extras/helpers/CameraHelper.js
index bd003ab6ef09aa965566817f8528e77994ec28ce..07fda0f1dd389d44580e9f9cd4d7d4e82a9f4710 100644
--- a/src/extras/helpers/CameraHelper.js
+++ b/src/extras/helpers/CameraHelper.js
@@ -94,7 +94,7 @@ THREE.CameraHelper = function ( camera ) {
 	THREE.LineSegments.call( this, geometry, material );
 
 	this.camera = camera;
-	this.camera.updateProjectionMatrix();
+	if( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();
 
 	this.matrix = camera.matrixWorld;
 	this.matrixAutoUpdate = false;