diff --git a/db_scripts/diff/15337.down b/db_scripts/diff/15337.down
new file mode 100644
index 00000000..2f5156ea
--- /dev/null
+++ b/db_scripts/diff/15337.down
@@ -0,0 +1,3 @@
+USE provisioning;
+
+ALTER TABLE voip_fax_preferences DROP t38, DROP ecm;
diff --git a/db_scripts/diff/15337.up b/db_scripts/diff/15337.up
new file mode 100644
index 00000000..be6efd1f
--- /dev/null
+++ b/db_scripts/diff/15337.up
@@ -0,0 +1,5 @@
+USE provisioning;
+
+ALTER TABLE voip_fax_preferences
+    ADD t38 tinyint(1) NOT NULL DEFAULT '1',
+    ADD ecm tinyint(1) NOT NULL DEFAULT '1';