diff -Nru rkhunter-1.4.2/debian/changelog rkhunter-1.4.2/debian/changelog
--- rkhunter-1.4.2/debian/changelog	2014-11-07 01:35:51.000000000 +0000
+++ rkhunter-1.4.2/debian/changelog	2014-11-28 11:27:20.000000000 +0000
@@ -1,3 +1,10 @@
+rkhunter (1.4.2-0.4) unstable; urgency=medium
+
+  * Non-maintainer upload.
+  * Work-around missing /etc/rkhunter.conf in postinst (closes: #770242)
+
+ -- Francois Marier <francois@debian.org>  Sat, 29 Nov 2014 00:26:17 +1300
+
 rkhunter (1.4.2-0.3) unstable; urgency=medium
 
   * Non-maintainer upload.
diff -Nru rkhunter-1.4.2/debian/postinst rkhunter-1.4.2/debian/postinst
--- rkhunter-1.4.2/debian/postinst	2014-11-07 01:35:51.000000000 +0000
+++ rkhunter-1.4.2/debian/postinst	2014-11-28 11:27:20.000000000 +0000
@@ -35,7 +35,10 @@
         # Copy the passwd/group files to the TMP directory
         # to avoid warnings when rkhunter is first run.
         # This is normally done by the installer script.
-        rkhtmpdir=$(grep '^TMPDIR' /etc/rkhunter.conf | sed 's/TMPDIR=//')
+        rkhtmpdir=/var/lib/rkhunter/tmp
+        if [ -e "/etc/rkhunter.conf" ]; then
+            rkhtmpdir=$(grep '^TMPDIR' /etc/rkhunter.conf | sed 's/TMPDIR=//')
+        fi
         [ -f $rkhtmpdir/passwd ] || cp -p /etc/passwd $rkhtmpdir >/dev/null 2>&1
         [ -f $rkhtmpdir/group ] || cp -p /etc/group $rkhtmpdir >/dev/null 2>&1