diff --git a/db_scripts/diff/15245.down b/db_scripts/diff/15245.down
new file mode 100644
index 00000000..a656847d
--- /dev/null
+++ b/db_scripts/diff/15245.down
@@ -0,0 +1,5 @@
+use kamailio;
+
+alter table kamailio.dialog
+	modify callee_contact varchar(128) not NULL,
+	modify caller_contact varchar(128) not NULL;
diff --git a/db_scripts/diff/15245.up b/db_scripts/diff/15245.up
new file mode 100644
index 00000000..ff0a21f6
--- /dev/null
+++ b/db_scripts/diff/15245.up
@@ -0,0 +1,5 @@
+use kamailio;
+
+alter table kamailio.dialog
+	modify callee_contact varchar(256) not NULL,
+	modify caller_contact varchar(256) not NULL;