diff --git a/reactos/ntoskrnl/io/pnpmgr.c b/reactos/ntoskrnl/io/pnpmgr.c
index 5e024386605..a8fcc3e4111 100644
--- a/reactos/ntoskrnl/io/pnpmgr.c
+++ b/reactos/ntoskrnl/io/pnpmgr.c
@@ -27,8 +27,15 @@ PDRIVER_OBJECT IopRootDriverObject;
 
 /* FUNCTIONS *****************************************************************/
 
+PDEVICE_NODE FASTCALL
+IopGetDeviceNode(
+  PDEVICE_OBJECT DeviceObject)
+{
+  return DeviceObject->DeviceObjectExtension->DeviceNode;
+}
+
 /*
- * @unimplemented
+ * @implemented
  */
 VOID
 STDCALL
@@ -36,14 +43,7 @@ IoInvalidateDeviceRelations(
   IN PDEVICE_OBJECT DeviceObject,
   IN DEVICE_RELATION_TYPE Type)
 {
-  CHECKPOINT1;
-}
-
-PDEVICE_NODE FASTCALL
-IopGetDeviceNode(
-  PDEVICE_OBJECT DeviceObject)
-{
-  return DeviceObject->DeviceObjectExtension->DeviceNode;
+  IopInvalidateDeviceRelations(IopGetDeviceNode(DeviceObject), Type);
 }
 
 /*