diff --git a/dlls/ntdll/nt.c b/dlls/ntdll/nt.c
index 47d7b31864f..3f5ae2cf232 100644
--- a/dlls/ntdll/nt.c
+++ b/dlls/ntdll/nt.c
@@ -2782,3 +2782,15 @@ NTSTATUS WINAPI NtSystemDebugControl(SYSDBG_COMMAND command, PVOID inbuffer, ULO
 
     return STATUS_NOT_IMPLEMENTED;
 }
+
+/******************************************************************************
+ *  NtSetLdtEntries   (NTDLL.@)
+ *  ZwSetLdtEntries   (NTDLL.@)
+ */
+NTSTATUS WINAPI NtSetLdtEntries(ULONG selector1, ULONG entry1_low, ULONG entry1_high,
+                                ULONG selector2, ULONG entry2_low, ULONG entry2_high)
+{
+    FIXME("(%u, %u, %u, %u, %u, %u): stub\n", selector1, entry1_low, entry1_high, selector2, entry2_low, entry2_high);
+
+    return STATUS_NOT_IMPLEMENTED;
+}
diff --git a/dlls/ntdll/ntdll.spec b/dlls/ntdll/ntdll.spec
index 0a68144fc04..01c84c6aa97 100644
--- a/dlls/ntdll/ntdll.spec
+++ b/dlls/ntdll/ntdll.spec
@@ -340,7 +340,7 @@
 @ stdcall NtSetInformationToken(long long ptr long)
 @ stdcall NtSetIntervalProfile(long long)
 @ stdcall NtSetIoCompletion(ptr long ptr long long)
-@ stub NtSetLdtEntries
+@ stdcall NtSetLdtEntries(long long long long long long)
 @ stub NtSetLowEventPair
 @ stub NtSetLowWaitHighEventPair
 @ stub NtSetLowWaitHighThread
@@ -1261,7 +1261,7 @@
 @ stdcall ZwSetInformationToken(long long ptr long) NtSetInformationToken
 @ stdcall ZwSetIntervalProfile(long long) NtSetIntervalProfile
 @ stdcall ZwSetIoCompletion(ptr long ptr long long) NtSetIoCompletion
-@ stub ZwSetLdtEntries
+@ stdcall ZwSetLdtEntries(long long long long long long) NtSetLdtEntries
 @ stub ZwSetLowEventPair
 @ stub ZwSetLowWaitHighEventPair
 @ stub ZwSetLowWaitHighThread
diff --git a/include/ddk/wdm.h b/include/ddk/wdm.h
index fc296a615bb..6ad4bb36b47 100644
--- a/include/ddk/wdm.h
+++ b/include/ddk/wdm.h
@@ -1351,6 +1351,7 @@ NTSTATUS  WINAPI ZwSetInformationObject(HANDLE, OBJECT_INFORMATION_CLASS, PVOID,
 NTSTATUS  WINAPI ZwSetInformationProcess(HANDLE,PROCESS_INFORMATION_CLASS,PVOID,ULONG);
 NTSTATUS  WINAPI ZwSetInformationThread(HANDLE,THREADINFOCLASS,LPCVOID,ULONG);
 NTSTATUS  WINAPI ZwSetIoCompletion(HANDLE,ULONG,ULONG,NTSTATUS,ULONG);
+NTSTATUS  WINAPI ZwSetLdtEntries(ULONG,ULONG,ULONG,ULONG,ULONG,ULONG);
 NTSTATUS  WINAPI ZwSetSecurityObject(HANDLE,SECURITY_INFORMATION,PSECURITY_DESCRIPTOR);
 NTSTATUS  WINAPI ZwSetSystemInformation(SYSTEM_INFORMATION_CLASS,PVOID,ULONG);
 NTSTATUS  WINAPI ZwSetSystemTime(const LARGE_INTEGER*,LARGE_INTEGER*);
diff --git a/include/winternl.h b/include/winternl.h
index dddf946d357..0e6cd4b8274 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -2302,7 +2302,7 @@ NTSYSAPI NTSTATUS  WINAPI NtSetInformationThread(HANDLE,THREADINFOCLASS,LPCVOID,
 NTSYSAPI NTSTATUS  WINAPI NtSetInformationToken(HANDLE,TOKEN_INFORMATION_CLASS,PVOID,ULONG);
 NTSYSAPI NTSTATUS  WINAPI NtSetIntervalProfile(ULONG,KPROFILE_SOURCE);
 NTSYSAPI NTSTATUS  WINAPI NtSetIoCompletion(HANDLE,ULONG_PTR,ULONG_PTR,NTSTATUS,SIZE_T);
-NTSYSAPI NTSTATUS  WINAPI NtSetLdtEntries(ULONG,LDT_ENTRY,ULONG,LDT_ENTRY);
+NTSYSAPI NTSTATUS  WINAPI NtSetLdtEntries(ULONG,ULONG,ULONG,ULONG,ULONG,ULONG);
 NTSYSAPI NTSTATUS  WINAPI NtSetLowEventPair(HANDLE);
 NTSYSAPI NTSTATUS  WINAPI NtSetLowWaitHighEventPair(HANDLE);
 NTSYSAPI NTSTATUS  WINAPI NtSetLowWaitHighThread(VOID);