diff --git a/backgrounds/lines-wallpaper_1280_1024.svg b/backgrounds/lines-wallpaper_1280x1024.svg
similarity index 100%
rename from backgrounds/lines-wallpaper_1280_1024.svg
rename to backgrounds/lines-wallpaper_1280x1024.svg
diff --git a/backgrounds/lines-wallpaper_1600_1200.svg b/backgrounds/lines-wallpaper_1600x1200.svg
similarity index 100%
rename from backgrounds/lines-wallpaper_1600_1200.svg
rename to backgrounds/lines-wallpaper_1600x1200.svg
diff --git a/backgrounds/lines.xml b/backgrounds/lines.xml
new file mode 100644
index 0000000..4b834eb
--- /dev/null
+++ b/backgrounds/lines.xml
@@ -0,0 +1,12 @@
+<background>
+  <static>
+    <duration>8640000.0</duration>
+    <file>
+      <size width="1280" height="1024">/usr/share/images/desktop-base/lines-wallpaper_1280x1024.svg</size>
+      <size width="1600" height="1200">/usr/share/images/desktop-base/lines-wallpaper_1600x1200.svg</size>
+      <size width="1920" height="1080">/usr/share/images/desktop-base/lines-wallpaper_1920x1080.svg</size>
+      <size width="1920" height="1200">/usr/share/images/desktop-base/lines-wallpaper_1920x1200.svg</size>
+      <size width="2560" height="1080">/usr/share/images/desktop-base/lines-wallpaper_2560x1080.svg</size>
+    </file>
+  </static>
+</background>
diff --git a/debian/changelog b/debian/changelog
index f74fa04..8bcc3cc 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -9,6 +9,8 @@ desktop-base (8.0.0~exp2) UNRELEASED; urgency=medium
     - Add KDE wallpaper.
   * Fix incorrect icon references in desktop files.
     (Closes: #607838, #628116, #628146)
+  * Link desktop-background.xml alternative to Lines by default.
+    (Closes: #766232)
 
  -- Aurélien COUDERC <zecoucou@free.fr>  Wed, 03 Dec 2014 10:37:16 +0100
 
diff --git a/debian/postinst b/debian/postinst
index d26dac3..72ce994 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -19,8 +19,8 @@ if [ "$1" = "configure" -o "$1" = "abort-upgrade" ]; then
             desktop-background \
             /usr/share/images/desktop-base/$background $priority
     done << EOF
-lines-wallpaper_1280_1024.svg 65
-lines-wallpaper_1600_1200.svg 65
+lines-wallpaper_1280x1024.svg 65
+lines-wallpaper_1600x1200.svg 65
 lines-wallpaper_1920x1080.svg 70
 lines-wallpaper_1920x1200.svg 65
 lines-wallpaper_2560x1080.svg 65
@@ -39,10 +39,15 @@ EOF
 
     # Set up an alternative for the XML version of the background
     # (for GNOME)
-    update-alternatives --install \
-        /usr/share/images/desktop-base/desktop-background.xml \
-        desktop-background.xml \
-        /usr/share/images/desktop-base/joy.xml 10
+    while read desktopbackground priority; do
+        update-alternatives --install \
+            /usr/share/images/desktop-base/desktop-background.xml \
+            desktop-background.xml \
+            /usr/share/images/desktop-base/$desktopbackground $priority
+    done << EOF
+lines.xml 20
+joy.xml 10
+EOF
 
     # Alternatives for the splash
     while read splash priority; do
diff --git a/debian/prerm b/debian/prerm
index 226cc35..5d63000 100644
--- a/debian/prerm
+++ b/debian/prerm
@@ -6,8 +6,8 @@ set -e
 if [ "$1" = "remove" ] || [ "$1" = "deconfigure" ]; then
     # remove background alternatives
     for background in \
-          lines-wallpaper_1280_1024.svg \
-          lines-wallpaper_1600_1200.svg \
+          lines-wallpaper_1280x1024.svg \
+          lines-wallpaper_1600x1200.svg \
           lines-wallpaper_1920x1080.svg \
           lines-wallpaper_1920x1200.svg \
           lines-wallpaper_2560x1080.svg \
@@ -26,7 +26,13 @@ if [ "$1" = "remove" ] || [ "$1" = "deconfigure" ]; then
           ; do
         update-alternatives --remove desktop-background /usr/share/images/desktop-base/$background
     done
-    update-alternatives --remove desktop-background.xml /usr/share/images/desktop-base/joy.xml
+    # remove desktop-background.xml alternatives
+    for desktopbackground in \
+          lines.xml \
+          joy.xml \
+          ; do
+        update-alternatives --remove desktop-background.xml /usr/share/images/desktop-base/$desktopbackground
+    done
 
     # remove splash alternatives
     for splash in \