diff --git a/datalad_next/annexremotes/uncurl.py b/datalad_next/annexremotes/uncurl.py
index cd40378a..6007daa6 100644
--- a/datalad_next/annexremotes/uncurl.py
+++ b/datalad_next/annexremotes/uncurl.py
@@ -45,7 +45,7 @@
 for a dataset (as shown above)::
 
     $ echo '[{"url":"ssh://my.server.org/home/me/file", "file":"dummy"}]' \\
-        | datalad addurls - '{url}' {'file'}
+        | datalad addurls - '{url}' '{file}'
 
 This makes legacy commands (e.g., ``datalad download-url``), unnecessary, and
 facilitates the use of more advanced ``datalad addurls`` features (e.g.,
@@ -411,7 +411,7 @@ def remove(self, key):
             )
         except UrlOperationsResourceUnknown:
             self.message(
-                'f{key} not found at the remote, skipping', type='debug')
+                f'{key!r} not found at the remote, skipping', type='debug')
 
     #
     # helpers
@@ -424,7 +424,7 @@ def get_key_urls(self, key) -> list[str]:
         # this will also work within checkurl() for a temporary key
         # generated by git-annex after claimurl()
         urls = self.annex.geturls(key, prefix='')
-        self.message(f"Known urls for {key!r}: {urls}", type='debug')
+        self.message(f'Known urls for {key!r}: {urls}', type='debug')
         if self.url_tmpl:
             # we have a rewriting template. extract all properties
             # from all known URLs and instantiate the template