diff --git a/src/plugin/Component.cc b/src/plugin/Component.cc
index 5740d7f19a..96476f2aea 100644
--- a/src/plugin/Component.cc
+++ b/src/plugin/Component.cc
@@ -39,6 +39,12 @@ void Component::Describe(ODesc* d) const {
 
         case component::SESSION_ADAPTER: d->Add("Session Adapter"); break;
 
+        case component::CLUSTER_BACKEND: d->Add("Cluster Backend"); break;
+
+        case component::EVENT_SERIALIZER: d->Add("Event Serializer"); break;
+
+        case component::LOG_SERIALIZER: d->Add("Log Serializer"); break;
+
         default:
             reporter->InternalWarning("unknown component type in plugin::Component::Describe");
             d->Add("<unknown component type>");
diff --git a/src/plugin/Component.h b/src/plugin/Component.h
index d4eb296bf3..f61fe0555b 100644
--- a/src/plugin/Component.h
+++ b/src/plugin/Component.h
@@ -21,15 +21,18 @@ namespace component {
  * Component types.
  */
 enum Type {
-    READER,          /// An input reader (not currently used).
-    WRITER,          /// A logging writer (not currently used).
-    ANALYZER,        /// A protocol analyzer.
-    PACKET_ANALYZER, /// A packet analyzer.
-    FILE_ANALYZER,   /// A file analyzer.
-    IOSOURCE,        /// An I/O source, excluding packet sources.
-    PKTSRC,          /// A packet source.
-    PKTDUMPER,       /// A packet dumper.
-    SESSION_ADAPTER, /// A session adapter analyzer.
+    READER,           /// An input reader (not currently used).
+    WRITER,           /// A logging writer (not currently used).
+    ANALYZER,         /// A protocol analyzer.
+    PACKET_ANALYZER,  /// A packet analyzer.
+    FILE_ANALYZER,    /// A file analyzer.
+    IOSOURCE,         /// An I/O source, excluding packet sources.
+    PKTSRC,           /// A packet source.
+    PKTDUMPER,        /// A packet dumper.
+    SESSION_ADAPTER,  /// A session adapter analyzer.
+    CLUSTER_BACKEND,  /// A cluster backend.
+    EVENT_SERIALIZER, /// A serializer for events, used by cluster backends.
+    LOG_SERIALIZER,   /// A serializer for log batches, used by cluster backends.
 };
 
 } // namespace component