diff --git a/papers/commands/add_cmd.py b/papers/commands/add_cmd.py
index 31cbcf5..1e27268 100644
--- a/papers/commands/add_cmd.py
+++ b/papers/commands/add_cmd.py
@@ -2,6 +2,7 @@ from .. import repo
 from .. import files
 from ..paper import Paper, NoDocumentFile, get_bibentry_from_string
 from ..configs import config
+from ..uis import get_ui
 from .helpers import add_paper_with_docfile, extract_doc_path_from_bibdata
 
 
@@ -25,7 +26,7 @@ def command(args):
     :param docfile: path (no url yet) to a pdf or ps file
     """
 
-    ui = args.ui
+    ui = get_ui()
     bibfile = args.bibfile
     docfile = args.docfile
     tags = args.tags
diff --git a/papers/commands/attach_cmd.py b/papers/commands/attach_cmd.py
index e2c9741..1d48ad3 100644
--- a/papers/commands/attach_cmd.py
+++ b/papers/commands/attach_cmd.py
@@ -1,5 +1,6 @@
 from .. import repo
 from ..configs import config
+from ..uis import get_ui
 from .helpers import (add_references_argument, parse_reference,
                       add_docfile_to_paper)
 
@@ -22,7 +23,7 @@ def command(args):
     :param docfile: path (no url yet) to a pdf or ps file
     """
 
-    ui = args.ui
+    ui = get_ui()
     copy = args.copy
     reference = args.reference
     document = args.document
diff --git a/papers/commands/edit_cmd.py b/papers/commands/edit_cmd.py
index 919162a..4bd59d4 100644
--- a/papers/commands/edit_cmd.py
+++ b/papers/commands/edit_cmd.py
@@ -3,6 +3,7 @@ from .. import repo
 from ..paper import get_bibentry_from_string, get_safe_metadata_from_content
 from .helpers import add_references_argument, parse_reference
 from ..configs import config
+from ..uis import get_ui
 
 
 def parser(subparsers):
@@ -16,7 +17,7 @@ def parser(subparsers):
 
 def command(args):
 
-    ui = args.ui
+    ui = get_ui()
     meta = args.meta
     reference = args.reference
 
diff --git a/papers/commands/export_cmd.py b/papers/commands/export_cmd.py
index d0422c7..0728f28 100644
--- a/papers/commands/export_cmd.py
+++ b/papers/commands/export_cmd.py
@@ -6,6 +6,7 @@ from .. import repo
 from .. import files
 from .helpers import parse_references, add_references_argument
 from ..configs import config
+from ..uis import get_ui
 
 def parser(subparsers):
     parser = subparsers.add_parser('export',
@@ -21,7 +22,7 @@ def command(args):
     :param bib_format       (in 'bibtex', 'yaml')
     """
 
-    ui = args.ui
+    ui = get_ui()
     bib_format = args.bib_format
     references = args.references
 
diff --git a/papers/commands/import_cmd.py b/papers/commands/import_cmd.py
index cb81fb9..1610c28 100644
--- a/papers/commands/import_cmd.py
+++ b/papers/commands/import_cmd.py
@@ -2,6 +2,7 @@ from .. import repo
 from ..paper import Paper
 from .helpers import add_paper_with_docfile, extract_doc_path_from_bibdata
 from ..configs import config
+from ..uis import get_ui
 
 def parser(subparsers):
     parser = subparsers.add_parser('import',
@@ -20,7 +21,7 @@ def command(args):
     :param bibpath: path (no url yet) to a bibliography file
     """
 
-    ui = args.ui
+    ui = get_ui()
     bibpath = args.bibpath
     copy = args.copy
 
diff --git a/papers/commands/init_cmd.py b/papers/commands/init_cmd.py
index b758312..cfdb177 100644
--- a/papers/commands/init_cmd.py
+++ b/papers/commands/init_cmd.py
@@ -4,6 +4,7 @@ import os
 
 from ..repo import Repository
 from ..configs import config
+from ..uis import get_ui
 from .. import color
 from .. import files
 
@@ -21,7 +22,7 @@ def parser(subparsers):
 def command(args):
     """Create a .papers directory"""
 
-    ui = args.ui
+    ui = get_ui()
     path = args.path
     doc_dir = args.doc_dir
 
diff --git a/papers/commands/list_cmd.py b/papers/commands/list_cmd.py
index ca95e80..b0eda6e 100644
--- a/papers/commands/list_cmd.py
+++ b/papers/commands/list_cmd.py
@@ -3,6 +3,7 @@ from .. import repo
 from .. import color
 from . import helpers
 from ..configs import config
+from ..uis import get_ui
 
 
 def parser(subparsers):
@@ -17,7 +18,7 @@ def parser(subparsers):
 
 def command(args):
 
-    ui = args.ui
+    ui = get_ui()
     citekeys = args.citekeys
     query = args.query
 
diff --git a/papers/commands/open_cmd.py b/papers/commands/open_cmd.py
index 647a16a..ca989cf 100644
--- a/papers/commands/open_cmd.py
+++ b/papers/commands/open_cmd.py
@@ -3,6 +3,7 @@ import subprocess
 from .. import repo
 from ..paper import NoDocumentFile
 from ..configs import config
+from ..uis import get_ui
 from .. import color
 from .helpers import add_references_argument, parse_reference
 
@@ -18,7 +19,7 @@ def parser(subparsers):
 
 def command(args):
 
-    ui = args.ui
+    ui = get_ui()
     with_command = args.with_command
     reference = args.reference
 
diff --git a/papers/commands/remove_cmd.py b/papers/commands/remove_cmd.py
index 26ededd..abc2008 100644
--- a/papers/commands/remove_cmd.py
+++ b/papers/commands/remove_cmd.py
@@ -1,6 +1,7 @@
 from .. import repo
 from .. import color
 from ..configs import config
+from ..uis import get_ui
 from .helpers import add_references_argument, parse_references
 
 
@@ -14,7 +15,7 @@ def parser(subparsers):
 
 def command(args):
 
-    ui = args.ui
+    ui = get_ui()
     force = args.force
     references = args.references
 
diff --git a/papers/commands/tag_cmd.py b/papers/commands/tag_cmd.py
index 5c6de9e..cfebd49 100644
--- a/papers/commands/tag_cmd.py
+++ b/papers/commands/tag_cmd.py
@@ -20,6 +20,7 @@ The different use cases are :
 from ..repo import Repository, InvalidReference
 from . import helpers
 from ..configs import config
+from ..uis import get_ui
 
 def parser(subparsers):
     parser = subparsers.add_parser('tag', help="add, remove and show tags")
@@ -67,7 +68,7 @@ def _tag_groups(tags):
 def command(args):
     """Add, remove and show tags"""
 
-    ui = args.ui
+    ui = get_ui()
     referenceOrTag = args.referenceOrTag
     tags = args.tags
 
diff --git a/papers/commands/update_cmd.py b/papers/commands/update_cmd.py
index 0bfd1f6..312cb63 100644
--- a/papers/commands/update_cmd.py
+++ b/papers/commands/update_cmd.py
@@ -3,6 +3,7 @@ import sys
 from .. import repo
 from .. import color
 from ..configs import config
+from ..uis import get_ui
 from ..__init__ import __version__
 
 def parser(subparsers):
@@ -12,7 +13,7 @@ def parser(subparsers):
 
 def command(args):
 
-    ui = args.ui
+    ui = get_ui()
 
     code_version = __version__
     repo_version = int(config().version)
diff --git a/papers/commands/websearch_cmd.py b/papers/commands/websearch_cmd.py
index 056a8ad..e3e1c76 100644
--- a/papers/commands/websearch_cmd.py
+++ b/papers/commands/websearch_cmd.py
@@ -1,6 +1,7 @@
 import webbrowser
 import urllib
 
+from ..uis import get_ui
 
 def parser(subparsers):
     parser = subparsers.add_parser('websearch',
@@ -12,7 +13,7 @@ def parser(subparsers):
 
 def command(args):
 
-    ui = args.ui
+    ui = get_ui()
     search_string = args.search_string
 
     url = ("https://scholar.google.fr/scholar?q=%s&lr="
diff --git a/papers/files.py b/papers/files.py
index 8a90632..1937870 100644
--- a/papers/files.py
+++ b/papers/files.py
@@ -12,7 +12,6 @@ from io import StringIO
 
 import yaml
 
-from . import ui
 from . import color
 
 try:
diff --git a/papers/papers_cmd.py b/papers/papers_cmd.py
index f8c24fb..8df7bb9 100644
--- a/papers/papers_cmd.py
+++ b/papers/papers_cmd.py
@@ -71,8 +71,6 @@ def execute(raw_args = sys.argv):
         subparser = cmd_mod.parser(subparsers)  # why do we return the subparser ?
 
     args = parser.parse_args(raw_args[1:])
-
-    args.ui = ui
     cmd = args.command
     del args.command