diff --git a/buffet/commands/schema_constants.cc b/buffet/commands/schema_constants.cc
index 90c9faa..74f96af 100644
--- a/buffet/commands/schema_constants.cc
+++ b/buffet/commands/schema_constants.cc
@@ -22,6 +22,7 @@
 const char kInvalidObjectSchema[] = "invalid_object_schema";
 const char kDuplicateCommandDef[] = "duplicate_command_definition";
 const char kInvalidCommandName[] = "invalid_command_name";
+const char kCommandFailed[] = "command_failed";
 }  // namespace commands
 }  // namespace errors
 
@@ -42,6 +43,7 @@
 
 const char kObject_Properties[] = "properties";
 
+const char kCommand_Name[] = "name";
 const char kCommand_Parameters[] = "parameters";
 }  // namespace attributes
 }  // namespace commands