diff --git a/c/src/make/ChangeLog b/c/src/make/ChangeLog
index 2f90ca8766..d77c602891 100644
--- a/c/src/make/ChangeLog
+++ b/c/src/make/ChangeLog
@@ -1,3 +1,7 @@
+2011-03-07	Ralf Corsépius <ralf.corsepius@rtems.org>
+
+	* Makefile.inc.in: Set PROJECT_ROOT = @pkgdatadir@.
+
 2011-03-07	Ralf Corsépius <ralf.corsepius@rtems.org>
 
 	* Makefile.am: Install *.cfgs into $(pkgdatadir)/make.
diff --git a/c/src/make/Makefile.inc.in b/c/src/make/Makefile.inc.in
index 71a482f99b..322e790c4a 100644
--- a/c/src/make/Makefile.inc.in
+++ b/c/src/make/Makefile.inc.in
@@ -35,7 +35,7 @@ export SIZE
 export OBJCOPY
 
 RTEMS_CUSTOM = $(prefix)/make/custom/$(RTEMS_BSP).cfg
-PROJECT_ROOT = $(prefix)
+PROJECT_ROOT = @pkgdatadir@
 RTEMS_USE_OWN_PDIR = no
 RTEMS_HAS_POSIX_API = @RTEMS_HAS_POSIX_API@
 RTEMS_HAS_ITRON_API = no