diff --git a/hosts/mail/modules/openldap.nix b/hosts/mail/modules/openldap.nix
index 15892ec..26bf1c5 100644
--- a/hosts/mail/modules/openldap.nix
+++ b/hosts/mail/modules/openldap.nix
@@ -290,10 +290,10 @@ in
         ];
       };
 
-      "olcDatabase={10}mdb".attrs = {
+      "olcDatabase={5}mdb".attrs = {
         objectClass = [ "olcDatabaseConfig" "olcMdbConfig" ];
 
-        olcDatabase = "{10}mdb";
+        olcDatabase = "{5}mdb";
         olcDbDirectory = "/var/lib/openldap/data";
 
         olcSuffix = "dc=docfast,dc=dev";