diff --git a/dlls/ntdll/nt.c b/dlls/ntdll/nt.c
index d27dca4be0e..cc13672b2b9 100644
--- a/dlls/ntdll/nt.c
+++ b/dlls/ntdll/nt.c
@@ -885,71 +885,6 @@ NTSTATUS WINAPI NtDisplayString ( PUNICODE_STRING string )
     return ret;
 }
 
-/******************************************************************************
- *  NtInitiatePowerAction                       [NTDLL.@]
- *
- */
-NTSTATUS WINAPI NtInitiatePowerAction(
-	IN POWER_ACTION SystemAction,
-	IN SYSTEM_POWER_STATE MinSystemState,
-	IN ULONG Flags,
-	IN BOOLEAN Asynchronous)
-{
-        FIXME("(%d,%d,0x%08x,%d),stub\n",
-		SystemAction,MinSystemState,Flags,Asynchronous);
-        return STATUS_NOT_IMPLEMENTED;
-}
-
-/******************************************************************************
- *  NtSetThreadExecutionState                   [NTDLL.@]
- *
- */
-NTSTATUS WINAPI NtSetThreadExecutionState( EXECUTION_STATE new_state, EXECUTION_STATE *old_state )
-{
-    static EXECUTION_STATE current =
-        ES_SYSTEM_REQUIRED | ES_DISPLAY_REQUIRED | ES_USER_PRESENT;
-    *old_state = current;
-
-    WARN( "(0x%x, %p): stub, harmless.\n", new_state, old_state );
-
-    if (!(current & ES_CONTINUOUS) || (new_state & ES_CONTINUOUS))
-        current = new_state;
-    return STATUS_SUCCESS;
-}
-
-/******************************************************************************
- *  NtCreatePowerRequest                        [NTDLL.@]
- *
- */
-NTSTATUS WINAPI NtCreatePowerRequest( HANDLE *handle, COUNTED_REASON_CONTEXT *context )
-{
-    FIXME( "(%p, %p): stub\n", handle, context );
-
-    return STATUS_NOT_IMPLEMENTED;
-}
-
-/******************************************************************************
- *  NtSetPowerRequest                           [NTDLL.@]
- *
- */
-NTSTATUS WINAPI NtSetPowerRequest( HANDLE handle, POWER_REQUEST_TYPE type )
-{
-    FIXME( "(%p, %u): stub\n", handle, type );
-
-    return STATUS_NOT_IMPLEMENTED;
-}
-
-/******************************************************************************
- *  NtClearPowerRequest                         [NTDLL.@]
- *
- */
-NTSTATUS WINAPI NtClearPowerRequest( HANDLE handle, POWER_REQUEST_TYPE type )
-{
-    FIXME( "(%p, %u): stub\n", handle, type );
-
-    return STATUS_NOT_IMPLEMENTED;
-}
-
 /******************************************************************************
  *  NtAllocateLocallyUniqueId (NTDLL.@)
  */
diff --git a/dlls/ntdll/ntdll.spec b/dlls/ntdll/ntdll.spec
index 22cb9d1942f..6293dc81ed4 100644
--- a/dlls/ntdll/ntdll.spec
+++ b/dlls/ntdll/ntdll.spec
@@ -149,7 +149,7 @@
 @ stdcall -syscall NtCancelIoFileEx(long ptr ptr)
 @ stdcall -syscall NtCancelTimer(long ptr)
 @ stdcall -syscall NtClearEvent(long)
-@ stdcall NtClearPowerRequest(long long)
+@ stdcall -syscall NtClearPowerRequest(long long)
 @ stdcall NtClose(long)
 @ stub NtCloseObjectAuditAlarm
 # @ stub NtCompactKeys
@@ -175,7 +175,7 @@
 @ stdcall -syscall NtCreateNamedPipeFile(ptr long ptr ptr long long long long long long long long long ptr)
 @ stdcall NtCreatePagingFile(ptr ptr ptr ptr)
 @ stdcall NtCreatePort(ptr ptr long long ptr)
-@ stdcall NtCreatePowerRequest(ptr ptr)
+@ stdcall -syscall NtCreatePowerRequest(ptr ptr)
 @ stub NtCreateProcess
 # @ stub NtCreateProcessEx
 @ stub NtCreateProfile
@@ -230,7 +230,7 @@
 @ stub NtImpersonateClientOfPort
 @ stub NtImpersonateThread
 @ stub NtInitializeRegistry
-@ stdcall NtInitiatePowerAction (long long long long)
+@ stdcall -syscall NtInitiatePowerAction (long long long long)
 @ stdcall -syscall NtIsProcessInJob(long long)
 # @ stub NtIsSystemResumeAutomatic
 @ stdcall NtListenPort(ptr ptr)
@@ -386,7 +386,7 @@
 @ stub NtSetLowEventPair
 @ stub NtSetLowWaitHighEventPair
 @ stub NtSetLowWaitHighThread
-@ stdcall NtSetPowerRequest(long long)
+@ stdcall -syscall NtSetPowerRequest(long long)
 # @ stub NtSetQuotaInformationFile
 @ stdcall NtSetSecurityObject(long long ptr)
 @ stub NtSetSystemEnvironmentValue
@@ -394,7 +394,7 @@
 @ stdcall -syscall NtSetSystemInformation(long ptr long)
 @ stub NtSetSystemPowerState
 @ stdcall -syscall NtSetSystemTime(ptr ptr)
-@ stdcall NtSetThreadExecutionState(long ptr)
+@ stdcall -syscall NtSetThreadExecutionState(long ptr)
 @ stdcall -syscall NtSetTimer(long ptr ptr ptr long long ptr)
 @ stdcall -syscall NtSetTimerResolution(long long ptr)
 # @ stub NtSetUuidSeed
@@ -1138,7 +1138,7 @@
 @ stdcall -private -syscall ZwCancelIoFileEx(long ptr ptr) NtCancelIoFileEx
 @ stdcall -private -syscall ZwCancelTimer(long ptr) NtCancelTimer
 @ stdcall -private -syscall ZwClearEvent(long) NtClearEvent
-@ stdcall -private ZwClearPowerRequest(long long) NtClearPowerRequest
+@ stdcall -private -syscall ZwClearPowerRequest(long long) NtClearPowerRequest
 @ stdcall -private ZwClose(long) NtClose
 @ stub ZwCloseObjectAuditAlarm
 # @ stub ZwCompactKeys
@@ -1163,7 +1163,7 @@
 @ stdcall -private -syscall ZwCreateNamedPipeFile(ptr long ptr ptr long long long long long long long long long ptr) NtCreateNamedPipeFile
 @ stdcall -private ZwCreatePagingFile(ptr ptr ptr ptr) NtCreatePagingFile
 @ stdcall -private ZwCreatePort(ptr ptr long long ptr) NtCreatePort
-@ stdcall -private ZwCreatePowerRequest(ptr ptr) NtCreatePowerRequest
+@ stdcall -private -syscall ZwCreatePowerRequest(ptr ptr) NtCreatePowerRequest
 @ stub ZwCreateProcess
 # @ stub ZwCreateProcessEx
 @ stub ZwCreateProfile
@@ -1217,7 +1217,7 @@
 @ stub ZwImpersonateClientOfPort
 @ stub ZwImpersonateThread
 @ stub ZwInitializeRegistry
-@ stdcall -private ZwInitiatePowerAction(long long long long) NtInitiatePowerAction
+@ stdcall -private -syscall ZwInitiatePowerAction(long long long long) NtInitiatePowerAction
 @ stdcall -private -syscall ZwIsProcessInJob(long long) NtIsProcessInJob
 # @ stub ZwIsSystemResumeAutomatic
 @ stdcall -private ZwListenPort(ptr ptr) NtListenPort
@@ -1373,7 +1373,7 @@
 @ stub ZwSetLowEventPair
 @ stub ZwSetLowWaitHighEventPair
 @ stub ZwSetLowWaitHighThread
-@ stdcall -private ZwSetPowerRequest(long long) NtSetPowerRequest
+@ stdcall -private -syscall ZwSetPowerRequest(long long) NtSetPowerRequest
 # @ stub ZwSetQuotaInformationFile
 @ stdcall -private ZwSetSecurityObject(long long ptr) NtSetSecurityObject
 @ stub ZwSetSystemEnvironmentValue
@@ -1381,7 +1381,7 @@
 @ stdcall -private -syscall ZwSetSystemInformation(long ptr long) NtSetSystemInformation
 @ stub ZwSetSystemPowerState
 @ stdcall -private -syscall ZwSetSystemTime(ptr ptr) NtSetSystemTime
-@ stdcall ZwSetThreadExecutionState(long ptr) NtSetThreadExecutionState
+@ stdcall -private -syscall ZwSetThreadExecutionState(long ptr) NtSetThreadExecutionState
 @ stdcall -private -syscall ZwSetTimer(long ptr ptr ptr long long ptr) NtSetTimer
 @ stdcall -private -syscall ZwSetTimerResolution(long long ptr) NtSetTimerResolution
 # @ stub ZwSetUuidSeed
diff --git a/dlls/ntdll/unix/system.c b/dlls/ntdll/unix/system.c
index 80478c59edf..7f85b41645c 100644
--- a/dlls/ntdll/unix/system.c
+++ b/dlls/ntdll/unix/system.c
@@ -3019,3 +3019,58 @@ NTSTATUS WINAPI NtPowerInformation( POWER_INFORMATION_LEVEL level, void *input,
         return STATUS_NOT_IMPLEMENTED;
     }
 }
+
+
+/******************************************************************************
+ *              NtInitiatePowerAction  (NTDLL.@)
+ */
+NTSTATUS WINAPI NtInitiatePowerAction( POWER_ACTION action, SYSTEM_POWER_STATE state,
+                                       ULONG flags, BOOLEAN async )
+{
+    FIXME( "(%d,%d,0x%08x,%d),stub\n", action, state, flags, async );
+    return STATUS_NOT_IMPLEMENTED;
+}
+
+
+/******************************************************************************
+ *              NtCreatePowerRequest  (NTDLL.@)
+ */
+NTSTATUS WINAPI NtCreatePowerRequest( HANDLE *handle, COUNTED_REASON_CONTEXT *context )
+{
+    FIXME( "(%p, %p): stub\n", handle, context );
+    return STATUS_NOT_IMPLEMENTED;
+}
+
+
+/******************************************************************************
+ *              NtSetPowerRequest  (NTDLL.@)
+ */
+NTSTATUS WINAPI NtSetPowerRequest( HANDLE handle, POWER_REQUEST_TYPE type )
+{
+    FIXME( "(%p, %u): stub\n", handle, type );
+    return STATUS_NOT_IMPLEMENTED;
+}
+
+
+/******************************************************************************
+ *              NtClearPowerRequest  (NTDLL.@)
+ */
+NTSTATUS WINAPI NtClearPowerRequest( HANDLE handle, POWER_REQUEST_TYPE type )
+{
+    FIXME( "(%p, %u): stub\n", handle, type );
+    return STATUS_NOT_IMPLEMENTED;
+}
+
+
+/******************************************************************************
+ *              NtSetThreadExecutionState  (NTDLL.@)
+ */
+NTSTATUS WINAPI NtSetThreadExecutionState( EXECUTION_STATE new_state, EXECUTION_STATE *old_state )
+{
+    static EXECUTION_STATE current = ES_SYSTEM_REQUIRED | ES_DISPLAY_REQUIRED | ES_USER_PRESENT;
+
+    WARN( "(0x%x, %p): stub, harmless.\n", new_state, old_state );
+    *old_state = current;
+    if (!(current & ES_CONTINUOUS) || (new_state & ES_CONTINUOUS)) current = new_state;
+    return STATUS_SUCCESS;
+}