diff --git a/Utilities/sync.h b/Utilities/sync.h
index 60ac01d9a1..bd589827e0 100644
--- a/Utilities/sync.h
+++ b/Utilities/sync.h
@@ -28,6 +28,12 @@ DYNAMIC_IMPORT("ntdll.dll", NtWaitForKeyedEvent, NTSTATUS(HANDLE, PVOID Key, BOO
 DYNAMIC_IMPORT("ntdll.dll", NtReleaseKeyedEvent, NTSTATUS(HANDLE, PVOID Key, BOOLEAN Alertable, PLARGE_INTEGER Timeout));
 DYNAMIC_IMPORT("ntdll.dll", NtWaitForSingleObject, NTSTATUS(HANDLE Handle, BOOLEAN Alertable, PLARGE_INTEGER Timeout));
 DYNAMIC_IMPORT("ntdll.dll", NtDelayExecution, NTSTATUS(BOOLEAN Alertable, PLARGE_INTEGER DelayInterval));
+DYNAMIC_IMPORT("ntdll.dll", NtWaitForAlertByThreadId, NTSTATUS(PVOID Address, PLARGE_INTEGER Timeout));
+DYNAMIC_IMPORT("ntdll.dll", NtAlertThreadByThreadId, NTSTATUS(DWORD_PTR ThreadId));
+
+constexpr NTSTATUS NTSTATUS_SUCCESS = 0;
+constexpr NTSTATUS NTSTATUS_ALERTED = 0x101;
+constexpr NTSTATUS NTSTATUS_TIMEOUT = 0x102;
 #endif
 
 #ifndef __linux__