diff --git a/include/client.h b/include/client.h
index 9f8709a..3e3fd36 100644
--- a/include/client.h
+++ b/include/client.h
@@ -120,6 +120,12 @@ struct ZipStats
 	double out_ratio;
 };
 
+struct MetadataEntry
+{
+	char key[NICKLEN+1];
+	char value[TOPICLEN];
+};
+
 struct Client
 {
 	rb_dlink_node node;