diff --git a/types/angular-material/index.d.ts b/types/angular-material/index.d.ts
index db74c97d10..cfa894b87f 100644
--- a/types/angular-material/index.d.ts
+++ b/types/angular-material/index.d.ts
@@ -152,6 +152,10 @@ declare module 'angular' {
             defaultViewBoxSize(viewBoxSize: number): IIconProvider; // default: 24
             defaultFontSet(name: string): IIconProvider;
         }
+    
+        interface IInkRippleProvider {
+            disableInkRipple(): void;
+        }
 
         type IMedia = (media: string) => boolean;