diff --git a/ogg/oggcontainer.h b/ogg/oggcontainer.h
index 97719e3..b2f1d60 100644
--- a/ogg/oggcontainer.h
+++ b/ogg/oggcontainer.h
@@ -12,9 +12,11 @@
 #include <tuple>
 #include <unordered_map>
 
+/// \cond
 namespace CppUtilities {
 template <std::size_t bufferSize> class CopyHelper;
 }
+/// \endcond
 
 namespace TagParser {
 
diff --git a/tagvalue.cpp b/tagvalue.cpp
index ee95e12..ff7e0fa 100644
--- a/tagvalue.cpp
+++ b/tagvalue.cpp
@@ -72,6 +72,13 @@ pair<const char *, float> encodingParameter(TagTextEncoding tagTextEncoding)
     }
 }
 
+/*!
+ * \class TagParser::Popularity
+ * \brief The Popularity class contains a value for ID3v2's "Popularimeter" field.
+ * \remarks It can also be used for other formats than ID3v2.
+ * \sa See documentation of TagParser::Popularity for scaling.
+ */
+
 /*!
  * \class TagParser::TagValue
  * \brief The TagValue class wraps values of different types. It is meant to be assigned to a tag field.