diff --git a/eobuildall b/eobuildall
index 7a8eeb3..7226bb8 100755
--- a/eobuildall
+++ b/eobuildall
@@ -50,7 +50,7 @@ def build_module(config, module):
     try:
         dists = config.get('dists', module)
     except (ConfigParser.NoSectionError, ConfigParser.NoOptionError):
-        dists = 'buster,bullseye'
+        dists = 'bullseye'
     rc = os.system('/usr/local/bin/eobuilder -d %(dists)s %(module)s' % {'dists': dists, 'module': module})
     if rc == 0:
         return 'ok'
diff --git a/eobuilder/cmdline.py b/eobuilder/cmdline.py
index 43f0346..95b27ac 100644
--- a/eobuilder/cmdline.py
+++ b/eobuilder/cmdline.py
@@ -123,7 +123,7 @@ def parse_cmdline():
         parser.error("you shouldn't use argument when cleaning")
 
     if len(args) and not options.distrib:
-        options.distrib = ['buster']
+        options.distrib = ['bullseye']
 
     if options.repositories:
         for r in options.repositories: