diff --git a/contexthub/1.0/default/Contexthub.h b/contexthub/1.0/default/Contexthub.h
index 0883ce8..236e079 100644
--- a/contexthub/1.0/default/Contexthub.h
+++ b/contexthub/1.0/default/Contexthub.h
@@ -40,7 +40,7 @@
                                     const ContextHubMsg &msg) override;
 
     Return<Result> loadNanoApp(uint32_t hubId,
-                               const ::android::hardware::hidl_vec<uint8_t>& appBinary,
+                               const NanoAppBinary& appBinary,
                                uint32_t transactionId) override;
 
     Return<Result> unloadNanoApp(uint32_t hubId,