diff --git a/db_scripts/diff/15022.down b/db_scripts/diff/15022.down
new file mode 100644
index 00000000..78219edf
--- /dev/null
+++ b/db_scripts/diff/15022.down
@@ -0,0 +1,4 @@
+USE billing;
+
+ALTER TABLE contacts 
+  CHANGE COLUMN postcode postcode INT(6) DEFAULT NULL;
diff --git a/db_scripts/diff/15022.up b/db_scripts/diff/15022.up
new file mode 100644
index 00000000..88cb36ff
--- /dev/null
+++ b/db_scripts/diff/15022.up
@@ -0,0 +1,4 @@
+USE billing;
+
+ALTER TABLE contacts 
+  CHANGE COLUMN postcode postcode VARCHAR(16) DEFAULT NULL;