diff --git a/reactos/include/reactos/win32k/ntuser.h b/reactos/include/reactos/win32k/ntuser.h
index 8e6d0cf477f..7b47c3c2f14 100644
--- a/reactos/include/reactos/win32k/ntuser.h
+++ b/reactos/include/reactos/win32k/ntuser.h
@@ -1322,7 +1322,7 @@ NtUserGetAltTabInfo(
    HWND hwnd,
    INT  iItem,
    PALTTABINFO pati,
-   LPTSTR pszItemText,
+   LPWSTR pszItemText,
    UINT   cchItemText,
    BOOL   Ansi);
 
diff --git a/reactos/subsystems/win32/win32k/ntuser/ntstubs.c b/reactos/subsystems/win32/win32k/ntuser/ntstubs.c
index 46186618473..419b5e5f330 100644
--- a/reactos/subsystems/win32/win32k/ntuser/ntstubs.c
+++ b/reactos/subsystems/win32/win32k/ntuser/ntstubs.c
@@ -232,7 +232,7 @@ NtUserGetAltTabInfo(
    HWND hwnd,
    INT  iItem,
    PALTTABINFO pati,
-   LPTSTR pszItemText,
+   LPWSTR pszItemText,
    UINT   cchItemText,
    BOOL   Ansi)
 {