diff --git a/pubs/utils.py b/pubs/utils.py
index 60aadac..ba35da5 100644
--- a/pubs/utils.py
+++ b/pubs/utils.py
@@ -6,25 +6,29 @@ from . import pretty
 
 
 def resolve_citekey(repo, citekey, ui=None, exit_on_fail=True):
-    """Check that a citekey exists, or autocompletes it if not ambiguous."""
-    """ :returns found citekey """
+    """Check that a citekey exists, or autocompletes it if not ambiguous.
+        :returns found citekey
+    """
     # FIXME. Make me optionally non ui interactive/exiting
     citekeys = repo.citekeys_from_prefix(citekey)
     if len(citekeys) == 0:
         if ui is not None:
-            ui.error("No citekey named or beginning with '{}'".format(color.dye_out(citekey, 'citekey')))
+            ui.error("No citekey named or beginning with '{}'".format(
+                     color.dye_out(citekey, 'citekey')))
             if exit_on_fail:
                 ui.exit()
     elif len(citekeys) == 1:
         if citekeys[0] != citekey:
             if ui is not None:
-                ui.info("'{}' has been autocompleted into '{}'.".format(color.dye_out(citekey, 'citekey'), color.dye_out(citekeys[0], 'citekey')))
+                ui.info("'{}' has been autocompleted into '{}'.".format(
+                        color.dye_out(citekey, 'citekey'),
+                        color.dye_out(citekeys[0], 'citekey')))
             citekey = citekeys[0]
     elif citekey not in citekeys:
         if ui is not None:
             citekeys = sorted(citekeys)
-            ui.error("Be more specific; '{}' matches multiples citekeys:".format(
-                     citekey))
+            ui.error("Be more specific; '{}' matches multiples "
+                     "citekeys:".format(citekey))
             for c in citekeys:
                 p = repo.pull_paper(c)
                 ui.message(u'    {}'.format(pretty.paper_oneliner(p)))