diff --git a/VoldNativeService.h b/VoldNativeService.h
index 12a93f5..d02b262 100644
--- a/VoldNativeService.h
+++ b/VoldNativeService.h
@@ -162,6 +162,8 @@
     binder::Status bindMount(const std::string& sourceDir, const std::string& targetDir) override;
 
     binder::Status destroyDsuMetadataKey(const std::string& dsuSlot) override;
+
+    binder::Status getStorageSize(int64_t* storageSize) override;
 };
 
 }  // namespace vold