diff --git a/base/manifest-schema.json b/base/manifest-schema.json
index 50780ad..a8065b0 100644
--- a/base/manifest-schema.json
+++ b/base/manifest-schema.json
@@ -16,7 +16,7 @@
 				"device" : { "type" : "string" },
 				"mirror":   { "type": "string" }
 			},
-			"required": ["mount_dir"]
+			"required": ["mount_dir", "mirror"]
 		},
 		"system": {
 			"type": "object",
diff --git a/common/tasks/bootstrap.py b/common/tasks/bootstrap.py
index a1f6ca0..a41d697 100644
--- a/common/tasks/bootstrap.py
+++ b/common/tasks/bootstrap.py
@@ -13,10 +13,7 @@ def get_bootstrap_args(info):
 		options.append('--include=' + ','.join(include))
 	if len(exclude) > 0:
 		options.append('--exclude=' + ','.join(exclude))
-        if info.manifest.bootstrapper['mirror']:
-		mirror =  info.manifest.bootstrapper['mirror']
-	else:
-		mirror = 'http://http.debian.net/debian'
+	mirror =  info.manifest.bootstrapper['mirror']
 	arguments = [info.manifest.system['release'], info.root, mirror]
 	return executable, options, arguments