diff --git a/udfps/UdfpsHandler.cpp b/udfps/UdfpsHandler.cpp
index 5823873..6c750b2 100644
--- a/udfps/UdfpsHandler.cpp
+++ b/udfps/UdfpsHandler.cpp
@@ -87,6 +87,14 @@ class XiaomiLitoUdfpsHander : public UdfpsHandler {
     void onFingerUp() {
         // nothing
     }
+
+    void onAcquired(int32_t /*result*/, int32_t /*vendorCode*/) {
+        // nothing
+    }
+
+    void cancel() {
+        // nothing
+    }
   private:
     fingerprint_device_t *mDevice;
 };