diff --git a/bin/lamassu-nuke-db b/bin/lamassu-nuke-db
index 413196cd..44c8dc87 100755
--- a/bin/lamassu-nuke-db
+++ b/bin/lamassu-nuke-db
@@ -15,8 +15,8 @@ case ${answer:0:1} in
         createdb lamassu
 EOF
 
-      CURRENT_DIR=`dirname $0`
-      rm "$CURRENT_DIR/../migrations/.migrate"
+      CURRENT_DIR=`dirname "$(readlink -f "$0")"`
+      rm -f "$CURRENT_DIR/../migrations/.migrate"
       lamassu-migrate
       echo "Done."
     ;;
diff --git a/migrations/029-add_valid_to_user_config.js b/migrations/029-add_valid_to_user_config.js
index 1d0c5abb..e5488df8 100644
--- a/migrations/029-add_valid_to_user_config.js
+++ b/migrations/029-add_valid_to_user_config.js
@@ -2,6 +2,7 @@ var db = require('./db')
 
 exports.up = function (next) {
   var sql = [
+    'delete from user_config',
     'alter table user_config add column valid boolean not null'
   ]
   db.multi(sql, next)