diff --git multiple_email.install multiple_email.install
index a42dd9f..d7e248a 100644
--- multiple_email.install
+++ multiple_email.install
@@ -23,6 +23,7 @@ function multiple_email_install() {
       1
     FROM {users}
     WHERE uid != 0
+    ON DUPLICATE KEY UPDATE email=email
   ");
 }