diff --git a/examples/js/utils/ShadowMapViewer.js b/examples/js/utils/ShadowMapViewer.js
index 7d128b4d8b888a836e9900175a59792cc9f8e7bf..48fd2e7112796ca4670163b0fedfc46697ea1b34 100644
--- a/examples/js/utils/ShadowMapViewer.js
+++ b/examples/js/utils/ShadowMapViewer.js
@@ -170,7 +170,9 @@ THREE.ShadowMapViewer = function ( light ) {
 			 camera.right = window.innerWidth / 2;
 			 camera.top = window.innerHeight / 2;
 			 camera.bottom = window.innerHeight / - 2;
+			 camera.updateProjectionMatrix();
 
+			 this.update();
 		}
 
 	};