diff --git a/rootfs/etc/confd/templates/pgsql-login-maps.cf.tmpl b/rootfs/etc/confd/templates/pgsql-login-maps.cf.tmpl
index 43006c7..86983da 100644
--- a/rootfs/etc/confd/templates/pgsql-login-maps.cf.tmpl
+++ b/rootfs/etc/confd/templates/pgsql-login-maps.cf.tmpl
@@ -2,4 +2,4 @@ hosts = {{ getenv "DB_HOST" }}
 user = {{ getenv "DB_USER" "email" }}
 password = {{ getenv "DB_PASSWORD" }}
 dbname = {{ getenv "DB_NAME" "email" }}
-query = SELECT source FROM virtual_aliases WHERE destination='%s'
+query = SELECT source FROM virtual_aliases WHERE destination='%u'
diff --git a/rootfs/etc/confd/templates/pgsql-virtual-alias-maps.cf.tmpl b/rootfs/etc/confd/templates/pgsql-virtual-alias-maps.cf.tmpl
index 215d8a6..d7e5ef4 100644
--- a/rootfs/etc/confd/templates/pgsql-virtual-alias-maps.cf.tmpl
+++ b/rootfs/etc/confd/templates/pgsql-virtual-alias-maps.cf.tmpl
@@ -2,4 +2,4 @@ hosts = {{ getenv "DB_HOST" }}
 user = {{ getenv "DB_USER" "email" }}
 password = {{ getenv "DB_PASSWORD" }}
 dbname = {{ getenv "DB_NAME" "email" }}
-query = SELECT destination FROM virtual_aliases WHERE source='%s'
+query = SELECT destination FROM virtual_aliases WHERE source='%u'
diff --git a/rootfs/etc/confd/templates/pgsql-virtual-mailbox-domains.cf.tmpl b/rootfs/etc/confd/templates/pgsql-virtual-mailbox-domains.cf.tmpl
index 6fd5b58..89292e5 100644
--- a/rootfs/etc/confd/templates/pgsql-virtual-mailbox-domains.cf.tmpl
+++ b/rootfs/etc/confd/templates/pgsql-virtual-mailbox-domains.cf.tmpl
@@ -2,4 +2,4 @@ hosts = {{ getenv "DB_HOST" }}
 user = {{ getenv "DB_USER" "email" }}
 password = {{ getenv "DB_PASSWORD" }}
 dbname = {{ getenv "DB_NAME" "email" }}
-query = SELECT name FROM virtual_domains WHERE name='%s'
+query = SELECT name FROM virtual_domains WHERE name='%u'
diff --git a/rootfs/etc/confd/templates/pgsql-virtual-mailbox-maps.cf.tmpl b/rootfs/etc/confd/templates/pgsql-virtual-mailbox-maps.cf.tmpl
index 971fa97..addd0fb 100644
--- a/rootfs/etc/confd/templates/pgsql-virtual-mailbox-maps.cf.tmpl
+++ b/rootfs/etc/confd/templates/pgsql-virtual-mailbox-maps.cf.tmpl
@@ -2,4 +2,4 @@ hosts = {{ getenv "DB_HOST" }}
 user = {{ getenv "DB_USER" "email" }}
 password = {{ getenv "DB_PASSWORD" }}
 dbname = {{ getenv "DB_NAME" "email" }}
-query = SELECT email FROM virtual_users WHERE email ='%s'
+query = SELECT email FROM virtual_users WHERE email ='%u'