diff --git a/debian/postinst b/debian/postinst
index c267947..8fbd698 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -59,14 +59,30 @@ moreblue-orbit-splash.png 40
 EOF
 
     # Alternatives for grub
+    ## Favor widescreen / hi-res background for efi installations
+    num_grub_efi_installed=$(dpkg-query --list "grub-efi*" | grep "^i" | wc -l)
+    if [ $num_grub_efi_installed -gt 0 ] ; then
+        lines_grub_prio=15
+        lines_grub_1920_prio=20
+    else
+        lines_grub_prio=20
+        lines_grub_1920_prio=15
+    fi
+    update-alternatives --install \
+        /usr/share/images/desktop-base/desktop-grub.png \
+        desktop-grub \
+        /usr/share/images/desktop-base/lines-grub.png $lines_grub_prio
+    update-alternatives --install \
+        /usr/share/images/desktop-base/desktop-grub.png \
+        desktop-grub \
+        /usr/share/images/desktop-base/lines-grub-1920x1080.png $lines_grub_1920_prio
+
     while read background priority; do
         update-alternatives --install \
             /usr/share/images/desktop-base/desktop-grub.png \
             desktop-grub \
             /usr/share/images/desktop-base/$background $priority
     done << EOF
-lines-grub.png 20
-lines-grub-1920x1080.png 15
 joy-grub.png 15
 spacefun-grub.png 15
 spacefun-grub-widescreen.png 14