diff --git a/reactos/ReactOS.rbuild b/reactos/ReactOS.rbuild
index f9bac1ce489..88b6b531fa5 100644
--- a/reactos/ReactOS.rbuild
+++ b/reactos/ReactOS.rbuild
@@ -71,7 +71,7 @@
   </directory>
 -->
   <directory name="lib">
-    <xi:include href="lib/directory.rbuild" />
+    <xi:include href="lib/lib.rbuild" />
   </directory>
   <directory name="media">
     <xi:include href="media/media.rbuild" />
@@ -87,8 +87,13 @@
     <xi:include href="regtests/directory.rbuild" />
   </directory>
 -->
+  <directory name="subsys">
+    <xi:include href="subsys/subsys.rbuild" />
+  </directory>
+<!-- NOT DONE YET
   <directory name="subsystems">
     <xi:include href="subsystems/subsystems.rbuild" />
   </directory>
+-->
 
 </project>
diff --git a/reactos/boot/boot.xml b/reactos/boot/boot.rbuild
similarity index 52%
rename from reactos/boot/boot.xml
rename to reactos/boot/boot.rbuild
index dc9112369b7..3636ff938c3 100644
--- a/reactos/boot/boot.xml
+++ b/reactos/boot/boot.rbuild
@@ -1,3 +1,5 @@
+<?xml version="1.0"?>
+<!DOCTYPE project SYSTEM "tools/rbuild/project.dtd">
 <directory name="freeldr">
 	<xi:include href="freeldr/freeldr.xml" />
 </directory>
diff --git a/reactos/lib/directory.xml b/reactos/lib/lib.rbuild
similarity index 99%
rename from reactos/lib/directory.xml
rename to reactos/lib/lib.rbuild
index ae4ef977fd1..2db8bf1b2f5 100644
--- a/reactos/lib/directory.xml
+++ b/reactos/lib/lib.rbuild
@@ -1,3 +1,5 @@
+<?xml version="1.0"?>
+<!DOCTYPE project SYSTEM "tools/rbuild/project.dtd">
 <group>
 <directory name="acledit">
 	<xi:include href="acledit/acledit.xml" />
diff --git a/reactos/media/directory.xml b/reactos/media/media.rbuild
similarity index 81%
rename from reactos/media/directory.xml
rename to reactos/media/media.rbuild
index 69ebf8d55ad..a670c127003 100644
--- a/reactos/media/directory.xml
+++ b/reactos/media/media.rbuild
@@ -1,3 +1,5 @@
+<?xml version="1.0"?>
+<!DOCTYPE project SYSTEM "tools/rbuild/project.dtd">
 <group>
 <directory name="drivers">
 	<xi:include href="drivers/directory.xml" />
diff --git a/reactos/subsys/directory.xml b/reactos/subsys/subsys.rbuild
similarity index 84%
rename from reactos/subsys/directory.xml
rename to reactos/subsys/subsys.rbuild
index 600bc53f0f6..eee2e6a5734 100644
--- a/reactos/subsys/directory.xml
+++ b/reactos/subsys/subsys.rbuild
@@ -1,3 +1,5 @@
+<?xml version="1.0"?>
+<!DOCTYPE project SYSTEM "tools/rbuild/project.dtd">
 <group>
 <directory name="csrss">
 	<xi:include href="csrss/csrss.xml" />