diff --git a/rattail_fabric/postgresql.py b/rattail_fabric/postgresql.py
index 3aae1e1..2fee05f 100644
--- a/rattail_fabric/postgresql.py
+++ b/rattail_fabric/postgresql.py
@@ -143,7 +143,7 @@ def drop_db(name, checkfirst=True):
         sudo('sudo -u postgres dropdb {0}'.format(name), shell=False)
 
 
-def download_db(name, destination=None):
+def download_db(name, destination=None, port=None):
     """
     Download a database from the "current" server.
     """
@@ -151,7 +151,10 @@ def download_db(name, destination=None):
         destination = './{0}.sql.gz'.format(name)
     run('touch {0}.sql'.format(name))
     run('chmod 0666 {0}.sql'.format(name))
-    sudo('sudo -u postgres pg_dump --file={0}.sql {0}'.format(name), shell=False)
+    sudo('sudo -u postgres pg_dump {port} --file={name}.sql {name}'.format(
+        name=name,
+        port='--port={}'.format(port) if port else '',
+    ), shell=False)
     run('gzip --force {0}.sql'.format(name))
     get('{0}.sql.gz'.format(name), destination)
     run('rm {0}.sql.gz'.format(name))