diff --git a/buffet/commands/schema_constants.cc b/buffet/commands/schema_constants.cc
index 12cc6b6..3854278 100644
--- a/buffet/commands/schema_constants.cc
+++ b/buffet/commands/schema_constants.cc
@@ -48,6 +48,8 @@
 const char kCommand_Name[] = "name";
 const char kCommand_Parameters[] = "parameters";
 const char kCommand_Results[] = "results";
+const char kCommand_State[] = "state";
+const char kCommand_Progress[] = "progress";
 }  // namespace attributes
 }  // namespace commands