diff --git a/CONTROL/control b/CONTROL/control
index efc6f33..489fc8f 100644
--- a/CONTROL/control
+++ b/CONTROL/control
@@ -1,7 +1,7 @@
 Package: sweeper
 Priority: optional
 Section: misc
-Version: 2.1.5-2
+Version: 2.1.5-3
 Architecture: mipsel
 Maintainer: af123@hummypkg.org.uk
 Depends: webif(>=1.3.5-3)
diff --git a/CONTROL/postinst b/CONTROL/postinst
index 9a6e5cb..8edd329 100755
--- a/CONTROL/postinst
+++ b/CONTROL/postinst
@@ -31,9 +31,22 @@ case $schema in
 		sed -e 's/^folder /& series "" /' -i "$f"
 	done
 	;;
+    1|2)
+	# Upgrade fflag arguments
+	echo "Upgrading sweeper rules for folder flags"
+	(echo /mod/etc/sweeper.conf; find /media -follow -name .sweeper) \
+	    | while read f; do
+		[ -f "$f" ] || continue
+		echo "Processing $f..."
+		sed -e '
+			s/fflag autoshrinkr/fflag autoshrinkR/
+			s/fflag autodecryptr/fflag autodecryptR/
+		' -i "$f"
+	done
+	;;
 esac
 
-echo 2 > /mod/.swschema
+echo 3 > /mod/.swschema
 
 exit 0