diff --git a/reactos/subsystems/win32/win32k/objects/dc.c b/reactos/subsystems/win32/win32k/objects/dc.c
index ef1c5366be6..7a86eca4077 100644
--- a/reactos/subsystems/win32/win32k/objects/dc.c
+++ b/reactos/subsystems/win32/win32k/objects/dc.c
@@ -1821,8 +1821,8 @@ IntvGetDeviceCaps(
 
   pDevCaps->ulVersion         = pGdiInfo->ulVersion;
   pDevCaps->ulTechnology      = pGdiInfo->ulTechnology;
-  pDevCaps->ulHorzSizeM       = (pGdiInfo->ulHorzSize + 500) / 0x3E8u;
-  pDevCaps->ulVertSizeM       = (pGdiInfo->ulVertSize + 500) / 0x3E8u;
+  pDevCaps->ulHorzSizeM       = (pGdiInfo->ulHorzSize + 500) / 1000;
+  pDevCaps->ulVertSizeM       = (pGdiInfo->ulVertSize + 500) / 1000;
   pDevCaps->ulHorzSize        = pGdiInfo->ulHorzSize;
   pDevCaps->ulVertSize        = pGdiInfo->ulVertSize;
   pDevCaps->ulHorzRes         = pGdiInfo->ulHorzRes;