diff --git a/microdroid/keymint/service.cpp b/microdroid/keymint/service.cpp
index 8e20f44..5fc0bd2 100644
--- a/microdroid/keymint/service.cpp
+++ b/microdroid/keymint/service.cpp
@@ -102,7 +102,7 @@
 
     // Add Keymint Service
     std::shared_ptr<MicrodroidKeyMintDevice> keyMint =
-            ndk::SharedRefBase::make<MicrodroidKeyMintDevice>();
+            ndk::SharedRefBase::make<MicrodroidKeyMintDevice>(*rootKey);
     auto instanceName = std::string(MicrodroidKeyMintDevice::descriptor) + "/default";
     LOG(INFO) << "adding keymint service instance: " << instanceName;
     binder_status_t status =