diff --git a/src/materials/ShadowMaterial.d.ts b/src/materials/ShadowMaterial.d.ts
index 4133c7e0425b726b4c27ed1781bfa0769b45c219..8096ba9c9c87f6ad31535c86a33b744d145e5265 100644
--- a/src/materials/ShadowMaterial.d.ts
+++ b/src/materials/ShadowMaterial.d.ts
@@ -1,7 +1,14 @@
-import { ShaderMaterialParameters, ShaderMaterial } from './ShaderMaterial';
+import { Color } from './../math/Color';
+import { MaterialParameters, Material } from './Material';
 
-export class ShadowMaterial extends ShaderMaterial {
+export interface ShadowMaterialParameters extends MaterialParameters {
+	color?: Color | string | number;
+}
+
+export class ShadowMaterial extends Material {
+
+	constructor( parameters?: ShadowMaterialParameters );
 
-	constructor( parameters?: ShaderMaterialParameters );
+	color: Color;
 
 }