diff --git a/reactos/drivers/multimedia/directory.rbuild b/reactos/drivers/multimedia/directory.rbuild
index 3635811a2e0..aeca33a8b78 100755
--- a/reactos/drivers/multimedia/directory.rbuild
+++ b/reactos/drivers/multimedia/directory.rbuild
@@ -29,9 +29,9 @@
 	Drivers (experimental)
 -->
 
-<!--<directory name="mpu401_ks">
+<directory name="mpu401_ks">
 	<xi:include href="mpu401_ks/mpu401.rbuild" />
-</directory>-->
+</directory>
 
 <directory name="sb16_nt4">
 	<xi:include href="sb16_nt4/sb16_nt4.rbuild" />