diff --git a/src/lib/srdb1/schema/entities.xml b/src/lib/srdb1/schema/entities.xml
index 17a47baf831..933777de2da 100644
--- a/src/lib/srdb1/schema/entities.xml
+++ b/src/lib/srdb1/schema/entities.xml
@@ -1,5 +1,6 @@
 <!ENTITY user_len "64">
 <!ENTITY domain_len "64">
+<!ENTITY socket_len "128">
 <!ENTITY from_tag_len "128">
 <!ENTITY to_tag_len "128">
 <!ENTITY password_len "64">