diff --git a/OpenSim/Data/SQLite/Resources/001_UserAccount.sql b/OpenSim/Data/SQLite/Resources/001_UserAccount.sql
index f9bf24c908..c38d9a762f 100644
--- a/OpenSim/Data/SQLite/Resources/001_UserAccount.sql
+++ b/OpenSim/Data/SQLite/Resources/001_UserAccount.sql
@@ -2,7 +2,7 @@
 
 -- useraccounts table
 CREATE TABLE UserAccounts (
-    PrincipalID CHAR(36) NOT NULL,
+    PrincipalID CHAR(36)  primary key,
     ScopeID CHAR(36) NOT NULL,
     FirstName VARCHAR(64) NOT NULL,
     LastName VARCHAR(64) NOT NULL,