diff --git a/src/commands/schema_constants.cc b/src/commands/schema_constants.cc
index 732cf44..37bee4c 100644
--- a/src/commands/schema_constants.cc
+++ b/src/commands/schema_constants.cc
@@ -32,12 +32,6 @@
 const char kCommand_State[] = "state";
 const char kCommand_Error[] = "error";
 
-const char kCommand_Role[] = "minimalRole";
-const char kCommand_Role_Manager[] = "manager";
-const char kCommand_Role_Owner[] = "owner";
-const char kCommand_Role_User[] = "user";
-const char kCommand_Role_Viewer[] = "viewer";
-
 }  // namespace attributes
 }  // namespace commands
 
diff --git a/src/commands/schema_constants.h b/src/commands/schema_constants.h
index 360079a..623fec3 100644
--- a/src/commands/schema_constants.h
+++ b/src/commands/schema_constants.h
@@ -34,12 +34,6 @@
 extern const char kCommand_State[];
 extern const char kCommand_Error[];
 
-extern const char kCommand_Role[];
-extern const char kCommand_Role_Manager[];
-extern const char kCommand_Role_Owner[];
-extern const char kCommand_Role_User[];
-extern const char kCommand_Role_Viewer[];
-
 }  // namespace attributes
 }  // namespace commands
 
diff --git a/src/component_manager_impl.cc b/src/component_manager_impl.cc
index dec4a48..6e609a2 100644
--- a/src/component_manager_impl.cc
+++ b/src/component_manager_impl.cc
@@ -19,11 +19,13 @@
 // Max of 100 state update events should be enough in the queue.
 const size_t kMaxStateChangeQueueSize = 100;
 
+const char kMinimalRole[] = "minimalRole";
+
 const EnumToStringMap<UserRole>::Map kMap[] = {
-    {UserRole::kViewer, commands::attributes::kCommand_Role_Viewer},
-    {UserRole::kUser, commands::attributes::kCommand_Role_User},
-    {UserRole::kOwner, commands::attributes::kCommand_Role_Owner},
-    {UserRole::kManager, commands::attributes::kCommand_Role_Manager},
+    {UserRole::kViewer, "viewer"},
+    {UserRole::kUser, "user"},
+    {UserRole::kOwner, "owner"},
+    {UserRole::kManager, "manager"},
 };
 }  // anonymous namespace
 
@@ -356,7 +358,7 @@
   std::string value;
   // The JSON definition has been pre-validated already in LoadCommands, so
   // just using CHECKs here.
-  CHECK(command->GetString(commands::attributes::kCommand_Role, &value));
+  CHECK(command->GetString(kMinimalRole, &value));
   CHECK(StringToEnum(value, minimal_role));
   return true;
 }