diff --git a/update_status_utils.h b/update_status_utils.h
index 8a07ebe..78d3530 100644
--- a/update_status_utils.h
+++ b/update_status_utils.h
@@ -17,12 +17,17 @@
 #ifndef CLIENT_LIBRARY_UPDATE_STATUS_TO_STRING_H_
 #define CLIENT_LIBRARY_UPDATE_STATUS_TO_STRING_H_
 
+#include <string>
+
 #include "update_engine/update_status.h"
 
 namespace chromeos_update_engine {
 
 const char* UpdateStatusToString(const update_engine::UpdateStatus& status);
 
+bool StringToUpdateStatus(const std::string& update_status_as_string,
+                          update_engine::UpdateStatus* status);
+
 }  // namespace chromeos_update_engine
 
 #endif  // CLIENT_LIBRARY_UPDATE_STATUS_TO_STRING_H_