diff --git a/swh/indexer/mimetype.py b/swh/indexer/mimetype.py
--- a/swh/indexer/mimetype.py
+++ b/swh/indexer/mimetype.py
@@ -103,7 +103,8 @@
     """Mimetype Indexer working on list of content identifiers.
 
     It:
-    - (optionally) filters out content already indexed (cf. :callable:`filter`)
+    - (optionally) filters out content already indexed
+      (cf. :func:`filter`)
     - reads content from objstorage per the content's id (sha1)
     - computes {mimetype, encoding} from that content
     - stores result in storage
@@ -129,7 +130,8 @@
     """Mimetype Range Indexer working on range of content identifiers.
 
     It:
-    - (optionally) filters out content already indexed (cf :callable:`range`)
+    - (optionally) filters out content already indexed (cf
+      :func:`indexed_contents_in_range`)
     - reads content from objstorage per the content's id (sha1)
     - computes {mimetype, encoding} from that content
     - stores result in storage