diff --git a/db_scripts/diff/10728.down b/db_scripts/diff/10728.down
new file mode 100644
index 00000000..058a647f
--- /dev/null
+++ b/db_scripts/diff/10728.down
@@ -0,0 +1,4 @@
+use kamailio
+
+ALTER TABLE pua DROP KEY `expires_idx`;
+ALTER TABLE pua ADD UNIQUE KEY `expires_idx` (`expires`);
diff --git a/db_scripts/diff/10728.up b/db_scripts/diff/10728.up
new file mode 100644
index 00000000..ffdb83af
--- /dev/null
+++ b/db_scripts/diff/10728.up
@@ -0,0 +1,4 @@
+use kamailio
+
+ALTER TABLE pua DROP KEY `expires_idx`;
+ALTER TABLE pua ADD KEY `expires_idx` (`expires`);