diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 9e63b9a6d8..337e5686f6 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -8,6 +8,12 @@
    2002-12-01 13:30 UTC+0100 Foo Bar <foo.bar@foobar.org>
 */
 
+2008-01-31 13:00 UTC+0100 Ryszard Glab <harbour//rglab.pl>
+   * source/rdd/Makefile
+   * config/global.cf
+      * added HB_LIB_DIRS with a list of valid RDD subdirectories
+        (HB_LIB_DRIVERS stores the list of valid RDD libraries)
+
 2008-01-31 12:40 UTC+0100 Ryszard Glab <harbour//rglab.pl>
    * doc/howtosvn.txt
       * svn update does not report locally modified files - it is 
diff --git a/harbour/config/global.cf b/harbour/config/global.cf
index c58443d2e3..d23561141a 100644
--- a/harbour/config/global.cf
+++ b/harbour/config/global.cf
@@ -5,6 +5,7 @@
 GRANDP = ../../
 HB_ARCH := $(HB_ARCHITECTURE)/$(HB_COMPILER)
 
+#names of valid RDD libraries
 HB_DB_DRIVERS=\
 	rddntx \
 	rddcdx \
@@ -13,6 +14,15 @@ HB_DB_DRIVERS=\
 	hbhsx \
 	hbusrrdd \
 
+#names of valid RDD subdirectories
+HB_DB_DIRS=\
+	dbfntx \
+	dbfcdx \
+	dbffpt \
+	hbsix \
+	hsx \
+	usrrdd \
+
 
 ifneq ($(HB_DB_DRVEXT),)
 HB_DB_DRIVERS += $(HB_DB_DRVEXT)
diff --git a/harbour/source/rdd/Makefile b/harbour/source/rdd/Makefile
index b9d55f8bc4..385328b12e 100644
--- a/harbour/source/rdd/Makefile
+++ b/harbour/source/rdd/Makefile
@@ -45,7 +45,7 @@ PRG_SOURCES=\
 LIBNAME=hbrdd
 
 # The list of all valid DB drivers is defined in config/global.cf.
-DIRS=nulsys $(HB_DB_DRIVERS)
+DIRS=nulsys $(HB_DB_DIRS)
 
 include $(TOP)$(ROOT)config/lib.cf
 include $(TOP)$(ROOT)config/dir.cf