diff --git a/keystore/confirmation_manager.h b/keystore/confirmation_manager.h
index 4bf4b8d..b92deda 100644
--- a/keystore/confirmation_manager.h
+++ b/keystore/confirmation_manager.h
@@ -61,6 +61,9 @@
     Status cancelConfirmationPrompt(const android::sp<android::IBinder>& listener,
                                     int32_t* aidl_return);
 
+    // Checks if the confirmationUI HAL is available.
+    Status isConfirmationPromptSupported(bool* aidl_return);
+
     // Gets the latest confirmation token received from the ConfirmationUI HAL.
     hidl_vec<uint8_t> getLatestConfirmationToken();