diff --git a/gunicorn/main.py b/gunicorn/main.py
index 1fbe78da..e6925681 100644
--- a/gunicorn/main.py
+++ b/gunicorn/main.py
@@ -171,6 +171,7 @@ def paste_server(app, global_conf=None, host="127.0.0.1", port=None,
     if conf["daemon"] :
         daemonize(conf["umask"])
     else:
+        os.umask(int(conf['umask'], 0))
         os.setpgrp()
     set_owner_process(conf["user"], conf["group"])
     configure_logging(conf)
diff --git a/gunicorn/management/commands/run_gunicorn.py b/gunicorn/management/commands/run_gunicorn.py
index a300d1b7..f52ed4af 100644
--- a/gunicorn/management/commands/run_gunicorn.py
+++ b/gunicorn/management/commands/run_gunicorn.py
@@ -69,6 +69,7 @@ class Command(BaseCommand):
             if conf['daemon']:
                 daemonize(conf['umask'])
             else:
+                os.umask(int(conf['umask'], 0))
                 os.setpgrp()
             set_owner_process(conf["user"], conf["group"])
             configure_logging(conf)