diff --git a/contrib/completion/zsh/_docker-compose b/contrib/completion/zsh/_docker-compose
index 539482e5b..2995932d1 100644
--- a/contrib/completion/zsh/_docker-compose
+++ b/contrib/completion/zsh/_docker-compose
@@ -200,7 +200,7 @@ __docker-compose_subcommand() {
         (bundle)
             _arguments \
                 $opts_help \
-                '(--output -o)'{--output,-o}'[Path to write the bundle file to. Defaults to "<project name>.dsb".]:file:_files' && ret=0
+                '(--output -o)'{--output,-o}'[Path to write the bundle file to. Defaults to "<project name>.dab".]:file:_files' && ret=0
             ;;
         (config)
             _arguments \