diff --git a/pmb/parse/arguments.py b/pmb/parse/arguments.py
index 4ef87505..e02cf719 100644
--- a/pmb/parse/arguments.py
+++ b/pmb/parse/arguments.py
@@ -269,8 +269,15 @@ def arguments():
     parser.add_argument("-c", "--config", dest="config",
                         default=pmb.config.defaults["config"])
     parser.add_argument("-d", "--port-distccd", dest="port_distccd")
-    parser.add_argument("-mp", "--mirror-pmOS", dest="mirror_postmarketos")
-    parser.add_argument("-m", "--mirror-alpine", dest="mirror_alpine")
+    parser.add_argument("-mp", "--mirror-pmOS", dest="mirror_postmarketos",
+                        help="postmarketOS mirror, disable with: -mp='',"
+                             " default: " +
+                             pmb.config.defaults["mirror_postmarketos"],
+                        metavar="URL")
+    parser.add_argument("-m", "--mirror-alpine", dest="mirror_alpine",
+                        help="Alpine Linux mirror, default: " +
+                             pmb.config.defaults["mirror_alpine"],
+                        metavar="URL")
     parser.add_argument("-j", "--jobs", help="parallel jobs when compiling")
     parser.add_argument("-p", "--aports",
                         help="postmarketos aports (pmaports) path")