diff --git a/packages/ml-vision/lib/index.d.ts b/packages/ml-vision/lib/index.d.ts
index e0fe8000..2084ca77 100644
--- a/packages/ml-vision/lib/index.d.ts
+++ b/packages/ml-vision/lib/index.d.ts
@@ -77,7 +77,7 @@ export namespace MLKitVision {
   /**
    * Options for vision face detector.
    */
-  export class VisionFaceDetectorOptions {
+  export interface VisionFaceDetectorOptions {
     /**
      * Indicates whether to run additional classifiers for characterizing attributes such as "smiling" and "eyes open".
      *