diff --git a/include/OpenColorIO/OpenColorIO.h b/include/OpenColorIO/OpenColorIO.h
index 738dc0b93c..dafe119b46 100644
--- a/include/OpenColorIO/OpenColorIO.h
+++ b/include/OpenColorIO/OpenColorIO.h
@@ -756,9 +756,8 @@ class OCIOEXPORT Config
                                          const char * builtinColorSpaceName);
 
     /**
-     * \defgroup Methods related to Roles.
-     * @{
-     *    
+     * Methods related to Roles.
+     *
      * A role allows a config author to indicate that a given color space should be used
      * for a particular purpose.  
      *
@@ -799,11 +798,8 @@ class OCIOEXPORT Config
     const char * getRoleColorSpace(const char * roleName) const noexcept;
 
     /**
-     * \defgroup Methods related to displays and views.
-     * @{
-     */
-
-    /**
+     * Methods related to displays and views.
+     *
      * The following methods only manipulate active displays and views. Active
      * displays and views are defined from an env. variable or from the config file.
      *
@@ -920,11 +916,8 @@ class OCIOEXPORT Config
     /// Clear all the displays.
     void clearDisplays();
 
-    /** @} */
-
     /**
-     * \defgroup Methods related to the Virtual Display.
-     * @{
+     * Methods related to the Virtual Display.
      *
      *  ...  (See descriptions for the non-virtual methods above.)
      *
@@ -1004,8 +997,6 @@ class OCIOEXPORT Config
      */
     int instantiateDisplayFromICCProfile(const char * ICCProfileFilepath);
 
-    /** @} */
-
     /**
      * \brief
      * 
@@ -1153,8 +1144,7 @@ class OCIOEXPORT Config
     void clearViewTransforms();
 
     /**
-     * \defgroup Methods related to named transforms.
-     * @{
+     * Methods related to named transforms.
      */
 
     /**
@@ -1197,8 +1187,6 @@ class OCIOEXPORT Config
     /// Clear all named transforms.
     void clearNamedTransforms();
 
-    /** @} */
-
     // 
     // File Rules
     //
@@ -2122,8 +2110,7 @@ class OCIOEXPORT ColorSpaceSet
     const Impl * getImpl() const { return m_impl; }
 };
 
-/** \defgroup ColorSpaceSetOperators
- *  @{
+/** ColorSpaceSetOperators
  */
 
 /**
@@ -2163,8 +2150,6 @@ extern OCIOEXPORT ConstColorSpaceSetRcPtr operator&&(const ConstColorSpaceSetRcP
 extern OCIOEXPORT ConstColorSpaceSetRcPtr operator-(const ConstColorSpaceSetRcPtr & lcss,
                                                     const ConstColorSpaceSetRcPtr & rcss);
 
-/** @}*/
-
 
 //
 // Look
@@ -3740,8 +3725,7 @@ class OCIOEXPORT SystemMonitors
     virtual bool isSupported() const noexcept = 0;
 
     /**
-     * \defgroup Methods to access some information of the attached and active monitors.
-     * @{
+     * Methods to access some information of the attached and active monitors.
      */
 
     /// Get the number of active monitors reported by the operating system.
@@ -3758,8 +3742,6 @@ class OCIOEXPORT SystemMonitors
     /// Get the ICC profile path associated to the monitor.
     virtual const char * getProfileFilepath(size_t idx) const = 0;
 
-    /** @} */
-
 protected:
     SystemMonitors() = default;
     virtual ~SystemMonitors() = default;
diff --git a/include/OpenColorIO/OpenColorTypes.h b/include/OpenColorIO/OpenColorTypes.h
index c400568eaa..5e28bbb175 100644
--- a/include/OpenColorIO/OpenColorTypes.h
+++ b/include/OpenColorIO/OpenColorTypes.h
@@ -726,8 +726,7 @@ extern OCIOEXPORT ExposureContrastStyle ExposureContrastStyleFromString(const ch
 extern OCIOEXPORT const char * NegativeStyleToString(NegativeStyle style);
 extern OCIOEXPORT NegativeStyle NegativeStyleFromString(const char * style);
 
-/** \defgroup Env. variables.
- *  @{
+/** Env. variables.
  *
  * These environmental variables are used by the OpenColorIO library.
  * For variables that allow specifying more than one token, they should be separated by commas.
@@ -776,12 +775,6 @@ extern OCIOEXPORT const char * OCIO_OPTIMIZATION_FLAGS_ENVVAR;
  */
 extern OCIOEXPORT const char * OCIO_USER_CATEGORIES_ENVVAR;
 
-/** @}*/
-
-/** \defgroup VarsRoles
- *  @{
- */
-
 // TODO: Move to .rst
 /*!rst::
 Roles
@@ -852,12 +845,6 @@ extern OCIOEXPORT const char * ROLE_INTERCHANGE_SCENE;
  */
 extern OCIOEXPORT const char * ROLE_INTERCHANGE_DISPLAY;
 
-/** @}*/
-
-/** \defgroup VarsSharedView
- *  @{
- */
-
 /*!rst::
 Shared View
 ***********
@@ -870,12 +857,6 @@ Shared View
  */
 extern OCIOEXPORT const char * OCIO_VIEW_USE_DISPLAY_NAME;
 
-/** @}*/
-
-/** \defgroup VarsFormatMetadata
- *  @{
- */
-
 // TODO: Move to .rst
 /*!rst::
 FormatMetadata
@@ -929,12 +910,6 @@ extern OCIOEXPORT const char * METADATA_NAME;
  */
 extern OCIOEXPORT const char * METADATA_ID;
 
-/** @}*/
-
-/** \defgroup VarsCaches
- *  @{
- */
-
 /*!rst::
 Caches
 ******
@@ -963,8 +938,6 @@ extern OCIOEXPORT const char * OCIO_DISABLE_PROCESSOR_CACHES;
 // variable to disable the fallback.
 extern OCIOEXPORT const char * OCIO_DISABLE_CACHE_FALLBACK;
 
-/** @}*/
-
 
 // Archive config feature
 // Default filename (with extension) of an config.