diff --git a/hw/xnest/Display.c b/hw/xnest/Display.c
index 7d8c5f69a..5428d041c 100644
--- a/hw/xnest/Display.c
+++ b/hw/xnest/Display.c
@@ -159,10 +159,10 @@ xnestOpenDisplay(int argc, char *argv[])
 
     if (xnestParentWindow == 0) {
         if (!(xnestUserGeometry & WidthValue))
-            xnestWidth = 3 * DisplayWidth(xnestDisplay, xnestUpstreamInfo.screenId) / 4;
+            xnestWidth = 3 * xnestUpstreamInfo.screenInfo->width_in_pixels / 4;
 
         if (!(xnestUserGeometry & HeightValue))
-            xnestHeight = 3 * DisplayHeight(xnestDisplay, xnestUpstreamInfo.screenId) / 4;
+            xnestHeight = 3 * xnestUpstreamInfo.screenInfo->height_in_pixels / 4;
     }
 
     if (!xnestUserBorderWidth)
diff --git a/hw/xnest/Screen.c b/hw/xnest/Screen.c
index 4e20600dd..01e9b8591 100644
--- a/hw/xnest/Screen.c
+++ b/hw/xnest/Screen.c
@@ -322,12 +322,12 @@ xnestOpenScreen(ScreenPtr pScreen, int argc, char *argv[])
                   &xnestCursorFuncs);
     PointPriv->spriteFuncs = &xnestPointerSpriteFuncs;
 
-    pScreen->mmWidth = xnestWidth * DisplayWidthMM(xnestDisplay, xnestUpstreamInfo.screenId)
-        / DisplayWidth(xnestDisplay, xnestUpstreamInfo.screenId);
+    pScreen->mmWidth =
+        xnestWidth * xnestUpstreamInfo.screenInfo->width_in_millimeters /
+        xnestUpstreamInfo.screenInfo->width_in_pixels;
     pScreen->mmHeight =
-        xnestHeight * DisplayHeightMM(xnestDisplay,
-                                      xnestUpstreamInfo.screenId) /
-        DisplayHeight(xnestDisplay, xnestUpstreamInfo.screenId);
+        xnestHeight * xnestUpstreamInfo.screenInfo->height_in_millimeters /
+        xnestUpstreamInfo.screenInfo->height_in_pixels;
 
     /* overwrite miCloseScreen with our own */
     pScreen->CloseScreen = xnestCloseScreen;