diff --git a/docs/Doxyfile.in b/docs/Doxyfile.in
index 9d4f2077..f2e07219 100644
--- a/docs/Doxyfile.in
+++ b/docs/Doxyfile.in
@@ -275,7 +275,7 @@ TCL_SUBST              =
 # members will be omitted, etc.
 # The default value is: NO.
 
-OPTIMIZE_OUTPUT_FOR_C  = YES
+OPTIMIZE_OUTPUT_FOR_C  = NO
 
 # Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java or
 # Python sources only. Doxygen will then generate output that is more tailored
@@ -360,7 +360,7 @@ AUTOLINK_SUPPORT       = YES
 # diagrams that involve STL classes more complete and accurate.
 # The default value is: NO.
 
-BUILTIN_STL_SUPPORT    = NO
+BUILTIN_STL_SUPPORT    = YES
 
 # If you use Microsoft's C++/CLI language, you should set this option to YES to
 # enable parsing support.
@@ -440,7 +440,7 @@ INLINE_SIMPLE_STRUCTS  = NO
 # types are typedef'ed and only the typedef is referenced, never the tag name.
 # The default value is: NO.
 
-TYPEDEF_HIDES_STRUCT   = NO
+TYPEDEF_HIDES_STRUCT   = YES
 
 # The size of the symbol lookup cache can be set using LOOKUP_CACHE_SIZE. This
 # cache is used to resolve symbols given their name and scope. Since this can be
@@ -2113,7 +2113,7 @@ ENABLE_PREPROCESSING   = YES
 # The default value is: NO.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
-MACRO_EXPANSION        = NO
+MACRO_EXPANSION        = YES
 
 # If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then
 # the macro expansion is limited to the macros specified with the PREDEFINED and
@@ -2121,7 +2121,9 @@ MACRO_EXPANSION        = NO
 # The default value is: NO.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
-EXPAND_ONLY_PREDEF     = NO
+EXPAND_ONLY_PREDEF     = YES
+
+EXPAND_AS_DEFINED      = LIBMDBX_INLINE_API
 
 # If the SEARCH_INCLUDES tag is set to YES, the include files in the
 # INCLUDE_PATH will be searched if a #include is found.
@@ -2172,7 +2174,7 @@ EXPAND_AS_DEFINED      =
 # The default value is: YES.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
-SKIP_FUNCTION_MACROS   = YES
+SKIP_FUNCTION_MACROS   = NO
 
 #---------------------------------------------------------------------------
 # Configuration options related to external references
diff --git a/mdbx.h b/mdbx.h
index a2461738..03fa4afa 100644
--- a/mdbx.h
+++ b/mdbx.h
@@ -353,7 +353,7 @@ typedef mode_t mdbx_mode_t;
 /** \brief Auxiliary macro for robustly define the both inline version of API
  * function and non-inline fallback dll-exported version for applications linked
  * with old version of libmdbx, with a strictly ODR-common implementation. */
-#if !defined(LIBMDBX_INTERNALS) || defined(DOXYGEN)
+#if !defined(LIBMDBX_INTERNALS)
 #define LIBMDBX_INLINE_API(TYPE, NAME, ARGS) static __inline TYPE NAME ARGS
 #else
 #define LIBMDBX_INLINE_API(TYPE, NAME, ARGS)                                   \
@@ -1863,7 +1863,7 @@ enum MDBX_env_delete_mode_t {
   MDBX_ENV_WAIT_FOR_UNUSED = 2,
 };
 #ifndef __cplusplus
-/** \c_extra c_statinfo */
+/** \ingroup c_extra */
 typedef enum MDBX_env_delete_mode_t MDBX_env_delete_mode_t;
 #endif