diff --git a/src/moin/apps/admin/views.py b/src/moin/apps/admin/views.py
index 0c5d62399..4023f1202 100644
--- a/src/moin/apps/admin/views.py
+++ b/src/moin/apps/admin/views.py
@@ -218,9 +218,9 @@ def mail_recovery_token():
             if not is_ok:
                 flash(msg, "error")
             else:
-                flash(_("{0} has been sent a password recovery email.".format(username)), "info")
+                flash(_("{0} has been sent a password recovery email.").format(username), "info")
         else:
-            flash(_("{0} is an invalid user, no email has been sent.".format(username)), "error")
+            flash(_("{0} is an invalid user, no email has been sent.").format(username), "error")
     else:
         flash(_("No user name provided, no email sent."), "error")
     return redirect(url_for('.userbrowser'))
diff --git a/src/moin/items/__init__.py b/src/moin/items/__init__.py
index 575674329..d3d7c6a21 100644
--- a/src/moin/items/__init__.py
+++ b/src/moin/items/__init__.py
@@ -1394,7 +1394,7 @@ def meta_changed(self, meta):
     def do_modify(self):
         if isinstance(self.content, NonExistentContent) and not flaskg.user.may.create(self.name):
             abort(403, description=' '
-                  + _('You do not have permission to create the item named "{name}".'.format(name=self.name)))
+                  + _('You do not have permission to create the item named "{name}".').format(name=self.name))
 
         method = request.method
         if method in ['GET', 'HEAD']:
diff --git a/src/moin/items/ticket.py b/src/moin/items/ticket.py
index 493c073b0..f9bde3ab0 100644
--- a/src/moin/items/ticket.py
+++ b/src/moin/items/ticket.py
@@ -188,7 +188,7 @@ def _dump(self, item):
                 else:
                     original = meta.get(key)
                     new = value
-                msg = L_('{key} changed from {original} to {new}'.format(key=key, original=original, new=new))
+                msg = L_('{key} changed from {original} to {new}').format(key=key, original=original, new=new)
                 meta_changes.append(' * ' + msg)
         if meta_changes:
             meta_changes = 'Meta updates:\n' + '\n'.join(meta_changes)
diff --git a/src/moin/macros/ItemList.py b/src/moin/macros/ItemList.py
index 191074a8c..09f8605ad 100644
--- a/src/moin/macros/ItemList.py
+++ b/src/moin/macros/ItemList.py
@@ -125,7 +125,7 @@ def macro(self, content, arguments, page_url, alternative):
         # verify item exists and current user has read permission
         if item != "":
             if not flaskg.storage.get_item(**(split_fqname(item).query)):
-                message = _('Item does not exist or read access blocked by ACLs: {0}'.format(item))
+                message = _('Item does not exist or read access blocked by ACLs: {0}').format(item)
                 admonition = moin_page.div(attrib={moin_page.class_: 'important'},
                                            children=[moin_page.p(children=[message])])
                 return admonition
@@ -136,7 +136,7 @@ def macro(self, content, arguments, page_url, alternative):
             try:
                 regex_re = re.compile(regex, re.IGNORECASE)
             except re.error as err:
-                raise ValueError(_("ItemList macro: Error in regex {0!r}: {1}".format(regex, err)))
+                raise ValueError(_("ItemList macro: Error in regex {0!r}: {1}").format(regex, err))
             newlist = []
             for child in children:
                 if regex_re.search(child.fullname):
diff --git a/src/moin/storage/middleware/indexing.py b/src/moin/storage/middleware/indexing.py
index 194e3b99a..13d1139ac 100644
--- a/src/moin/storage/middleware/indexing.py
+++ b/src/moin/storage/middleware/indexing.py
@@ -1230,9 +1230,9 @@ def store_revision(self, meta, data, overwrite=False,
                     val.append(str(e))
                 logging.warning("{0}, {1}, {2}".format(e.valid, e.name, e.raw))
             if VALIDATION_HANDLING == VALIDATION_HANDLING_STRICT:
-                raise ValueError(_('Error: metadata validation failed, invalid field value(s) = {0}'.format(
+                raise ValueError(_('Error: metadata validation failed, invalid field value(s) = {0}').format(
                     ', '.join(val)
-                )))
+                ))
 
         # we do not have anything in m that is not defined in the schema,
         # e.g. userdefined meta keys or stuff we do not validate. thus, we