diff --git a/sql/init.sql b/sql/init.sql
index 20d3416..279fcb5 100644
--- a/sql/init.sql
+++ b/sql/init.sql
@@ -64,16 +64,16 @@ CREATE TABLE IF NOT EXISTS radacct (
     connectinfo_stop VARCHAR(50) DEFAULT NULL,
     acctinputoctets BIGINT DEFAULT NULL,
     acctoutputoctets BIGINT DEFAULT NULL,
-    calledstationid VARCHAR(50) NOT NULL DEFAULT '',
-    callingstationid VARCHAR(50) NOT NULL DEFAULT '',
-    acctterminatecause VARCHAR(32) NOT NULL DEFAULT '',
+    calledstationid VARCHAR(50) DEFAULT '',
+    callingstationid VARCHAR(50) DEFAULT '',
+    acctterminatecause VARCHAR(32) DEFAULT NULL,
     servicetype VARCHAR(32) DEFAULT NULL,
     framedprotocol VARCHAR(32) DEFAULT NULL,
-    framedipaddress VARCHAR(46) NOT NULL DEFAULT '',
-    framedipv6address VARCHAR(45) NOT NULL DEFAULT '',
-    framedipv6prefix VARCHAR(45) NOT NULL DEFAULT '',
-    framedinterfaceid VARCHAR(44) NOT NULL DEFAULT '',
-    delegatedipv6prefix VARCHAR(45) NOT NULL DEFAULT '',
+    framedipaddress VARCHAR(46) DEFAULT '',
+    framedipv6address VARCHAR(45) DEFAULT '',
+    framedipv6prefix VARCHAR(45) DEFAULT '',
+    framedinterfaceid VARCHAR(44) DEFAULT '',
+    delegatedipv6prefix VARCHAR(45) DEFAULT '',
     class VARCHAR(64) DEFAULT NULL
 );
 CREATE INDEX IF NOT EXISTS radacct_username ON radacct (username);