diff --git a/app/ssh-askpass/x11-ssh-askpass.c b/app/ssh-askpass/x11-ssh-askpass.c
index 649413636..ccc6cf695 100644
--- a/app/ssh-askpass/x11-ssh-askpass.c
+++ b/app/ssh-askpass/x11-ssh-askpass.c
@@ -1507,6 +1507,12 @@ int main(int argc, char **argv)
    app.screen_height = HeightOfScreen(app.screen);
    app.screen_xoffset = 0;
    app.screen_yoffset = 0;
+
+   app.xResolution =
+      app.screen_width * 1000 / WidthMMOfScreen(app.screen);
+   app.yResolution =
+      app.screen_height * 1000 / HeightMMOfScreen(app.screen);
+
    if (XineramaIsActive(app.dpy) &&
       (screens = XineramaQueryScreens(app.dpy, &nscreens)) != NULL &&
       nscreens) {
@@ -1517,11 +1523,6 @@ int main(int argc, char **argv)
       XFree(screens);
    }
 
-   app.xResolution =
-      app.screen_width * 1000 / WidthMMOfScreen(app.screen);
-   app.yResolution =
-      app.screen_height * 1000 / HeightMMOfScreen(app.screen);
-
    createDialog(&app);
    createGCs(&app);