diff --git a/debian/changelog b/debian/changelog
index f0d0def6..b6c93731 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+livecd-rootfs (2.513) bionic; urgency=medium
+
+  * In the live-server build, prevent casper from mounting any existing
+    swap partitions from drives we might later be installing to.
+    (LP: #1743643)
+
+ -- Michael Hudson-Doyle <michael.hudson@ubuntu.com>  Wed, 21 Mar 2018 15:58:02 +1300
+
 livecd-rootfs (2.512) bionic; urgency=medium
 
   * ubuntu-cpc: When performing a minimized build, don't generate artifacts
diff --git a/live-build/ubuntu-server/hooks/032-installer-squashfs.binary b/live-build/ubuntu-server/hooks/032-installer-squashfs.binary
index a0b77a20..bab6ab76 100755
--- a/live-build/ubuntu-server/hooks/032-installer-squashfs.binary
+++ b/live-build/ubuntu-server/hooks/032-installer-squashfs.binary
@@ -53,6 +53,10 @@ EOF
 chroot $SQUASH_ROOT apt-get update
 chroot $SQUASH_ROOT apt-get -y install user-setup curtin lupin-casper
 
+# For bug #1743643 "Install to dirty disk with swap fails" remove the
+# "helpful" casper script that mounts any swap partitions it finds.
+rm -f $SQUASH_ROOT/usr/share/initramfs-tools/scripts/casper-bottom/*swap
+
 # Installing casper means we need a new initramfs
 UPDATE_INITRAMFS_OPTIONS=CASPER_GENERATE_UUID=1 recreate_initramfs $SQUASH_ROOT