diff --git a/reactos/win32ss/include/ntuser.h b/reactos/win32ss/include/ntuser.h
index c89f8523295..6c05fa5323a 100644
--- a/reactos/win32ss/include/ntuser.h
+++ b/reactos/win32ss/include/ntuser.h
@@ -2601,14 +2601,14 @@ NtUserProcessConnect(
     OUT PUSERCONNECT pUserConnect,
     IN  DWORD dwSize); // sizeof(USERCONNECT)
 
-DWORD
+NTSTATUS
 NTAPI
 NtUserQueryInformationThread(
-    DWORD dwUnknown1,
-    DWORD dwUnknown2,
-    DWORD dwUnknown3,
-    DWORD dwUnknown4,
-    DWORD dwUnknown5);
+    IN HANDLE ThreadHandle,
+    IN USERTHREADINFOCLASS ThreadInformationClass,
+    OUT PVOID ThreadInformation,
+    IN ULONG ThreadInformationLength
+);
 
 DWORD
 NTAPI
diff --git a/reactos/win32ss/user/ntuser/ntstubs.c b/reactos/win32ss/user/ntuser/ntstubs.c
index bc9705e6398..9ff4bdee2fd 100644
--- a/reactos/win32ss/user/ntuser/ntstubs.c
+++ b/reactos/win32ss/user/ntuser/ntstubs.c
@@ -754,17 +754,15 @@ NtUserProcessConnect(
   return STATUS_UNSUCCESSFUL;
 }
 
-DWORD
+NTSTATUS
 APIENTRY
-NtUserQueryInformationThread(
-    DWORD dwUnknown1,
-    DWORD dwUnknown2,
-    DWORD dwUnknown3,
-    DWORD dwUnknown4,
-    DWORD dwUnknown5)
+NtUserQueryInformationThread(IN HANDLE ThreadHandle,
+                             IN USERTHREADINFOCLASS ThreadInformationClass,
+                             OUT PVOID ThreadInformation,
+                             IN ULONG ThreadInformationLength)
 {
     STUB;
-    return 0;
+    return STATUS_SUCCESS;
 }
 
 DWORD
diff --git a/reactos/win32ss/w32ksvc.db b/reactos/win32ss/w32ksvc.db
index 58244a95c30..52f7e729b6c 100644
--- a/reactos/win32ss/w32ksvc.db
+++ b/reactos/win32ss/w32ksvc.db
@@ -483,7 +483,7 @@ NtUserPostMessage                                4
 NtUserPostThreadMessage                          4
 NtUserPrintWindow                                3
 NtUserProcessConnect                             3
-NtUserQueryInformationThread                     5
+NtUserQueryInformationThread                     4
 NtUserQueryInputContext                          2
 NtUserQuerySendMessage                           1
 NtUserQueryUserCounters                          5
diff --git a/rostests/apitests/w32kdll/w32kdll_2k3sp2/w32kdll_2k3sp2.spec b/rostests/apitests/w32kdll/w32kdll_2k3sp2/w32kdll_2k3sp2.spec
index d2af2ca50b1..1a6dab48d8f 100644
--- a/rostests/apitests/w32kdll/w32kdll_2k3sp2/w32kdll_2k3sp2.spec
+++ b/rostests/apitests/w32kdll/w32kdll_2k3sp2/w32kdll_2k3sp2.spec
@@ -482,7 +482,7 @@
 @ stdcall NtUserPostThreadMessage(long long long long)
 @ stdcall NtUserPrintWindow(ptr ptr long)
 @ stdcall NtUserProcessConnect(ptr ptr long)
-@ stdcall NtUserQueryInformationThread(long long long long)
+@ stdcall NtUserQueryInformationThread(ptr long ptr long)
 @ stdcall NtUserQueryInputContext(long long)
 @ stdcall NtUserQuerySendMessage(long)
 @ stdcall NtUserQueryWindow(ptr long)
diff --git a/rostests/apitests/w32kdll/w32kdll_ros/w32kdll_ros.spec b/rostests/apitests/w32kdll/w32kdll_ros/w32kdll_ros.spec
index c75d365322e..d0b1211b510 100644
--- a/rostests/apitests/w32kdll/w32kdll_ros/w32kdll_ros.spec
+++ b/rostests/apitests/w32kdll/w32kdll_ros/w32kdll_ros.spec
@@ -484,7 +484,7 @@
 @ stdcall NtUserPostThreadMessage(long long long long)
 @ stdcall NtUserPrintWindow(ptr ptr long)
 @ stdcall NtUserProcessConnect(ptr ptr long)
-@ stdcall NtUserQueryInformationThread(long long long long long)
+@ stdcall NtUserQueryInformationThread(ptr long ptr long)
 @ stdcall NtUserQueryInputContext(long long)
 @ stdcall NtUserQuerySendMessage(long)
 @ stdcall NtUserQueryUserCounters(long long long long long)
diff --git a/rostests/apitests/w32kdll/w32kdll_ros/win32ksvc-ros.h b/rostests/apitests/w32kdll/w32kdll_ros/win32ksvc-ros.h
index 3b6db971587..f0d97187e17 100644
--- a/rostests/apitests/w32kdll/w32kdll_ros/win32ksvc-ros.h
+++ b/rostests/apitests/w32kdll/w32kdll_ros/win32ksvc-ros.h
@@ -485,7 +485,7 @@ SVC_(UserPostMessage, 4)
 SVC_(UserPostThreadMessage, 4)
 SVC_(UserPrintWindow, 3)
 SVC_(UserProcessConnect, 3)
-SVC_(UserQueryInformationThread, 5)
+SVC_(UserQueryInformationThread, 4)
 SVC_(UserQueryInputContext, 2)
 SVC_(UserQuerySendMessage, 1)
 SVC_(UserQueryUserCounters, 5)