diff --git a/utils/kamctl/db_berkeley/kamailio/acc_cdrs b/utils/kamctl/db_berkeley/kamailio/acc_cdrs
index 8eb3cbbb5ac..57ab533c9e7 100644
--- a/utils/kamctl/db_berkeley/kamailio/acc_cdrs
+++ b/utils/kamctl/db_berkeley/kamailio/acc_cdrs
@@ -7,4 +7,4 @@ METADATA_READONLY
 METADATA_LOGFLAGS
 0
 METADATA_DEFAULTS
-NIL|''|''|''
+NIL|'2000-01-01 00:00:00'|'2000-01-01 00:00:00'|0
diff --git a/utils/kamctl/db_sqlite/acc-create.sql b/utils/kamctl/db_sqlite/acc-create.sql
index d27d3076f61..60b4193f14c 100644
--- a/utils/kamctl/db_sqlite/acc-create.sql
+++ b/utils/kamctl/db_sqlite/acc-create.sql
@@ -15,9 +15,9 @@ CREATE INDEX acc_callid_idx ON acc (callid);
 INSERT INTO version (table_name, table_version) values ('acc_cdrs','2');
 CREATE TABLE acc_cdrs (
     id INTEGER PRIMARY KEY NOT NULL,
-    start_time TIMESTAMP WITHOUT TIME ZONE DEFAULT '' NOT NULL,
-    end_time TIMESTAMP WITHOUT TIME ZONE DEFAULT '' NOT NULL,
-    duration REAL DEFAULT '' NOT NULL
+    start_time TIMESTAMP WITHOUT TIME ZONE DEFAULT '2000-01-01 00:00:00' NOT NULL,
+    end_time TIMESTAMP WITHOUT TIME ZONE DEFAULT '2000-01-01 00:00:00' NOT NULL,
+    duration REAL DEFAULT 0 NOT NULL
 );
 
 CREATE INDEX acc_cdrs_start_time_idx ON acc_cdrs (start_time);
diff --git a/utils/kamctl/mysql/acc-create.sql b/utils/kamctl/mysql/acc-create.sql
index c088ca45a0e..0d02811dc12 100644
--- a/utils/kamctl/mysql/acc-create.sql
+++ b/utils/kamctl/mysql/acc-create.sql
@@ -15,9 +15,9 @@ CREATE INDEX callid_idx ON acc (callid);
 INSERT INTO version (table_name, table_version) values ('acc_cdrs','2');
 CREATE TABLE acc_cdrs (
     id INT(10) UNSIGNED AUTO_INCREMENT PRIMARY KEY NOT NULL,
-    start_time DATETIME DEFAULT '' NOT NULL,
-    end_time DATETIME DEFAULT '' NOT NULL,
-    duration FLOAT(10,3) DEFAULT '' NOT NULL
+    start_time DATETIME DEFAULT '2000-01-01 00:00:00' NOT NULL,
+    end_time DATETIME DEFAULT '2000-01-01 00:00:00' NOT NULL,
+    duration FLOAT(10,3) DEFAULT 0 NOT NULL
 );
 
 CREATE INDEX start_time_idx ON acc_cdrs (start_time);
diff --git a/utils/kamctl/oracle/acc-create.sql b/utils/kamctl/oracle/acc-create.sql
index b84a97b3a81..2a71e852f28 100644
--- a/utils/kamctl/oracle/acc-create.sql
+++ b/utils/kamctl/oracle/acc-create.sql
@@ -23,9 +23,9 @@ CREATE INDEX acc_callid_idx  ON acc (callid);
 INSERT INTO version (table_name, table_version) values ('acc_cdrs','2');
 CREATE TABLE acc_cdrs (
     id NUMBER(10) PRIMARY KEY,
-    start_time DATE DEFAULT '',
-    end_time DATE DEFAULT '',
-    duration NUMBER(10,3) DEFAULT ''
+    start_time DATE DEFAULT '2000-01-01 00:00:00',
+    end_time DATE DEFAULT '2000-01-01 00:00:00',
+    duration NUMBER(10,3) DEFAULT 0 NOT NULL
 );
 
 CREATE OR REPLACE TRIGGER acc_cdrs_tr
diff --git a/utils/kamctl/postgres/acc-create.sql b/utils/kamctl/postgres/acc-create.sql
index 8ae4336c097..713514f059c 100644
--- a/utils/kamctl/postgres/acc-create.sql
+++ b/utils/kamctl/postgres/acc-create.sql
@@ -15,9 +15,9 @@ CREATE INDEX acc_callid_idx ON acc (callid);
 INSERT INTO version (table_name, table_version) values ('acc_cdrs','2');
 CREATE TABLE acc_cdrs (
     id SERIAL PRIMARY KEY NOT NULL,
-    start_time TIMESTAMP WITHOUT TIME ZONE DEFAULT '' NOT NULL,
-    end_time TIMESTAMP WITHOUT TIME ZONE DEFAULT '' NOT NULL,
-    duration REAL DEFAULT '' NOT NULL
+    start_time TIMESTAMP WITHOUT TIME ZONE DEFAULT '2000-01-01 00:00:00' NOT NULL,
+    end_time TIMESTAMP WITHOUT TIME ZONE DEFAULT '2000-01-01 00:00:00' NOT NULL,
+    duration REAL DEFAULT 0 NOT NULL
 );
 
 CREATE INDEX acc_cdrs_start_time_idx ON acc_cdrs (start_time);