diff --git a/reactos/ntoskrnl/ke/kthread.c b/reactos/ntoskrnl/ke/kthread.c
index 4a83c6e0d20..e082f32afc7 100644
--- a/reactos/ntoskrnl/ke/kthread.c
+++ b/reactos/ntoskrnl/ke/kthread.c
@@ -28,7 +28,6 @@ extern EX_WORK_QUEUE ExWorkerQueue[MaximumWorkQueue];
 LIST_ENTRY PriorityListHead[MAXIMUM_PRIORITY];
 static ULONG PriorityListMask = 0;
 ULONG IdleProcessorMask = 0;
-extern BOOLEAN DoneInitYet;
 extern PETHREAD PspReaperList;
 
 /* FUNCTIONS *****************************************************************/
@@ -232,7 +231,7 @@ KiDispatchThread(ULONG NewThreadStatus)
 {
     KIRQL OldIrql;
 
-    if (!DoneInitYet || KeGetCurrentPrcb()->IdleThread == NULL) {
+    if (KeGetCurrentPrcb()->IdleThread == NULL) {
         return;
     }
 
diff --git a/reactos/ntoskrnl/ntoskrnl.def b/reactos/ntoskrnl/ntoskrnl.def
index fd447b77294..e3f3fb42202 100644
--- a/reactos/ntoskrnl/ntoskrnl.def
+++ b/reactos/ntoskrnl/ntoskrnl.def
@@ -936,9 +936,10 @@ PsSetCreateThreadNotifyRoutine@4
 PsSetJobUIRestrictionsClass@8
 PsSetLegoNotifyRoutine@4
 PsSetProcessPriorityClass@8
+PsSetProcessPriorityByClass@8
 PsSetProcessSecurityPort@8
 PsSetProcessWin32Process@8
-PsSetProcessWin32WindowStation@8
+PsSetProcessWindowStation@8
 PsSetThreadHardErrorsAreDisabled@8
 PsSetThreadWin32Thread@8
 PsSetLoadImageNotifyRoutine@4
diff --git a/reactos/ntoskrnl/ps/process.c b/reactos/ntoskrnl/ps/process.c
index 8bef54d08c4..a73ea57eb48 100644
--- a/reactos/ntoskrnl/ps/process.c
+++ b/reactos/ntoskrnl/ps/process.c
@@ -753,12 +753,24 @@ PsSetProcessWin32Process(PEPROCESS Process,
  */
 VOID
 STDCALL
-PsSetProcessWin32WindowStation(PEPROCESS Process,
-                               PVOID WindowStation)
+PsSetProcessWindowStation(PEPROCESS Process,
+                          PVOID WindowStation)
 {
     Process->Win32WindowStation = WindowStation;
 }
 
+/*
+ * @unimplemented
+ */
+NTSTATUS
+STDCALL
+PsSetProcessPriorityByClass(IN PEPROCESS Process,
+                            IN ULONG Type)
+{
+    UNIMPLEMENTED;
+    return STATUS_NOT_IMPLEMENTED;
+}
+
 /*
  * FUNCTION: Creates a process.
  * ARGUMENTS:
diff --git a/reactos/ntoskrnl/ps/psmgr.c b/reactos/ntoskrnl/ps/psmgr.c
index 49592f17778..4b5ea867dd2 100644
--- a/reactos/ntoskrnl/ps/psmgr.c
+++ b/reactos/ntoskrnl/ps/psmgr.c
@@ -33,8 +33,6 @@ static GENERIC_MAPPING PiThreadMapping = {
     STANDARD_RIGHTS_EXECUTE | SYNCHRONIZE,
     THREAD_ALL_ACCESS};
 
-BOOLEAN DoneInitYet = FALSE;
-
 extern ULONG NtBuildNumber;
 extern ULONG NtMajorVersion;
 extern ULONG NtMinorVersion;
@@ -104,8 +102,6 @@ PsInitThreadManagment(VOID)
 
    DPRINT("FirstThread %x\n",FirstThread);
 
-   DoneInitYet = TRUE;
-
    ExInitializeWorkItem(&PspReaperWorkItem, PspReapRoutine, NULL);
 }