diff --git a/KeyStorage.h b/KeyStorage.h
index 6186d19..63345f4 100644
--- a/KeyStorage.h
+++ b/KeyStorage.h
@@ -61,6 +61,7 @@
 // Securely destroy the key stored in the named directory and delete the directory.
 bool destroyKey(const std::string& dir);
 
+bool runSecdiscardSingle(const std::string& file);
 }  // namespace vold
 }  // namespace android