diff --git a/modules/io/doc/mmcif.rst b/modules/io/doc/mmcif.rst
index e73c15ac9d255fa914220f8c9eeccd62e029d90e..a6c7d39b7c7b3e43f79e3d91ff786b61c0370a24 100644
--- a/modules/io/doc/mmcif.rst
+++ b/modules/io/doc/mmcif.rst
@@ -698,7 +698,7 @@ of the annotation available.
 
     See :attr:`replace_pdb_id`
 
-.. class:: MMCifINfoStructRef
+.. class:: MMCifInfoStructRef
 
   Holds the information of the struct_ref category. The category describes the 
   link of polymers in the mmCIF file to sequences stored in external databases