diff --git a/subsystems/ntvdm/dos.c b/subsystems/ntvdm/dos.c
index df81cd79db5..67a53b33985 100644
--- a/subsystems/ntvdm/dos.c
+++ b/subsystems/ntvdm/dos.c
@@ -964,7 +964,7 @@ BOOLEAN DosCreateProcess(LPCSTR CommandLine, WORD EnvBlock)
         for (i = Header->e_maxalloc; i >= Header->e_minalloc; i--, ExeSize--)
         {
             /* Try to allocate that much memory */
-            Segment = DosAllocateMemory(ExeSize, NULL);
+            Segment = DosAllocateMemory((WORD)ExeSize, NULL);
             if (Segment != 0) break;
         }
 
@@ -974,7 +974,7 @@ BOOLEAN DosCreateProcess(LPCSTR CommandLine, WORD EnvBlock)
         /* Initialize the PSP */
         DosInitializePsp(Segment,
                          CommandLine,
-                         ExeSize,
+                         (WORD)ExeSize,
                          EnvBlock);
 
         /* The process owns its own memory */
@@ -1046,7 +1046,7 @@ BOOLEAN DosCreateProcess(LPCSTR CommandLine, WORD EnvBlock)
         /* Initialize the PSP */
         DosInitializePsp(Segment,
                          CommandLine,
-                         (FileSize + sizeof(DOS_PSP)) >> 4,
+                         (WORD)((FileSize + sizeof(DOS_PSP)) >> 4),
                          EnvBlock);
 
         /* Set the initial segment registers */
@@ -1227,8 +1227,8 @@ VOID DosInt21h(LPWORD Stack)
     DWORD Ecx = EmulatorGetRegister(EMULATOR_REG_CX);
     DWORD Edx = EmulatorGetRegister(EMULATOR_REG_DX);
     DWORD Ebx = EmulatorGetRegister(EMULATOR_REG_BX);
-    WORD DataSegment = EmulatorGetRegister(EMULATOR_REG_DS);
-    WORD ExtSegment = EmulatorGetRegister(EMULATOR_REG_ES);
+    WORD DataSegment = (WORD)EmulatorGetRegister(EMULATOR_REG_DS);
+    WORD ExtSegment = (WORD)EmulatorGetRegister(EMULATOR_REG_ES);
 
     /* Check the value in the AH register */
     switch (HIBYTE(Eax))
diff --git a/subsystems/ntvdm/vga.c b/subsystems/ntvdm/vga.c
index 02f1fd727ff..c8eb211c3d6 100644
--- a/subsystems/ntvdm/vga.c
+++ b/subsystems/ntvdm/vga.c
@@ -235,7 +235,7 @@ static VOID VgaEnterGraphicsMode(UINT Width, UINT Height, UINT BitDepth)
     BitmapInfo->bmiHeader.biSizeImage = Width * Height * (BitDepth / 8);
 
     /* Fill the palette data */
-    for (i = 0; i < BitDepth; i++) PaletteIndex[i] = i;
+    for (i = 0; i < BitDepth; i++) PaletteIndex[i] = (WORD)i;
 
     /* Fill the console graphics buffer info */
     GraphicsBufferInfo.dwBitMapInfoLength = VGA_BITMAP_INFO_SIZE;
@@ -503,8 +503,8 @@ static VOID VgaUpdateTextCursor(VOID)
     Location += (VgaCrtcRegisters[VGA_CRTC_CURSOR_END_REG] >> 5) & 3;
 
     /* Find the coordinates of the new position */
-    Position.X = Location % ScanlineSize;
-    Position.Y = Location / ScanlineSize;
+    Position.X = (WORD)(Location % ScanlineSize);
+    Position.Y = (WORD)(Location / ScanlineSize);
 
     /* Update the physical cursor */
     SetConsoleCursorInfo(TextConsoleBuffer, &CursorInfo);