diff --git a/reactos/subsystems/ntvdm/bios/bios32/kbdbios32.c b/reactos/subsystems/ntvdm/bios/bios32/kbdbios32.c
index 0782f3e719f..7ef9a8b2502 100644
--- a/reactos/subsystems/ntvdm/bios/bios32/kbdbios32.c
+++ b/reactos/subsystems/ntvdm/bios/bios32/kbdbios32.c
@@ -205,7 +205,8 @@ static VOID WINAPI BiosKeyboardIrq(LPWORD Stack)
      * In return, if CF is set we continue processing the scan code
      * stored in AL, and if not, we skip it.
      */
-    BYTE CF, AX;
+    BYTE CF;
+    WORD AX;
     CF = getCF();
     AX = getAX();