diff --git a/modules/obs-portal/default.nix b/modules/obs-portal/default.nix
index dfd5793..da5b88e 100644
--- a/modules/obs-portal/default.nix
+++ b/modules/obs-portal/default.nix
@@ -158,7 +158,7 @@ in
     };
     initialize = true;
     backupPrepareCommand = ''
-      ${pkgs.docker}/bin/docker exec -ti --user postgres obs-portal-db pg_dump obs > /tmp/obs-portal-backup.sql
+      ${pkgs.docker}/bin/docker exec -i --user postgres obs-portal-db pg_dump obs > /tmp/obs-portal-backup.sql
     '';
     backupCleanupCommand = ''
       rm /tmp/obs-portal-backup.sql