diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 049053db6f..571a7550e7 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -16,6 +16,10 @@
    The license applies to all entries newer than 2009-04-28.
 */
 
+2012-06-06 15:17 UTC+0200 Viktor Szakats (harbour syenar.net)
+  * utils/hbmk2/hbmk2.prg
+    * marked hbmk2_* plugin API functions with HB_LEGACY_LEVEL4
+
 2012-06-06 12:53 UTC+0200 Viktor Szakats (harbour syenar.net)
   * utils/hbmk2/hbmk2.prg
     + added code signing options to help screen (though still
diff --git a/harbour/utils/hbmk2/hbmk2.prg b/harbour/utils/hbmk2/hbmk2.prg
index 50ee0baad4..4f8a4376b3 100644
--- a/harbour/utils/hbmk2/hbmk2.prg
+++ b/harbour/utils/hbmk2/hbmk2.prg
@@ -8613,6 +8613,8 @@ STATIC PROCEDURE PlugIn_Load( hbmk, cFileName )
 
 /* Public functions accessible for plugins (compatibility) */
 
+#if defined( HB_LEGACY_LEVEL4 )
+
 FUNCTION hbmk2_FindInPath( ... )                    ; RETURN hbmk_FindInPath( ... )
 FUNCTION hbmk2_PathSepToForward( ... )              ; RETURN hbmk_PathSepToForward( ... )
 FUNCTION hbmk2_PathSepToSelf( ... )                 ; RETURN hbmk_PathSepToSelf( ... )
@@ -8636,6 +8638,8 @@ FUNCTION hbmk2_AddInput_OBJ( ... )                  ; RETURN hbmk_AddInput_OBJ(
 FUNCTION hbmk2_AddInput_INSTFILE( ... )             ; RETURN hbmk_AddInput_INSTFILE( ... )
 FUNCTION hbmk2_Register_Input_File_Extension( ... ) ; RETURN hbmk_Register_Input_File_Extension( ... )
 
+#endif
+
 /* Public functions accessible for plugins */
 
 FUNCTION hbmk_FindInPath( ... )       ; RETURN FindInPath( ... )