diff --git a/src/materials/MultiMaterial.js b/src/materials/MultiMaterial.js
index c2f6ce0b3c671044258b22186ceb419669c0517c..a519c49b61a34f761684c0545a677ecdc758c8aa 100644
--- a/src/materials/MultiMaterial.js
+++ b/src/materials/MultiMaterial.js
@@ -10,7 +10,7 @@ function MultiMaterial( materials ) {
 
 	this.type = 'MultiMaterial';
 
-	this.materials = Array.isArray(materials) ? materials : [];
+	this.materials = Array.isArray( materials ) ? materials : [];
 
 	this.visible = true;