diff --git a/kismet.spec b/kismet.spec
index 12479b9..962ae66 100644
--- a/kismet.spec
+++ b/kismet.spec
@@ -69,8 +69,8 @@ This subpackage contains plugins shipped by the kismet package.
 # set our 'kismet' user, disable GPS and log into %logdir by
 # default
 sed -i \
-    -e '/^ouifile=/etc/manuf/d' \
-    -e '/^ouifile=/usr/share/wireshark/wireshark/manuf/d' \
+    -e '\!^ouifile=/etc/manuf!d' \
+    -e '\!^ouifile=/usr/share/wireshark/wireshark/manuf!d' \
     conf/kismet.conf.in conf/kismet_drone.conf