diff --git a/app/models/organization/search.rb b/app/models/organization/search.rb
index ec008f731..62d6e4be4 100644
--- a/app/models/organization/search.rb
+++ b/app/models/organization/search.rb
@@ -68,7 +68,7 @@ returns
 
       # fallback do sql query
       # - stip out * we already search for *query* -
-      query.delete! '*', ''
+      query.delete! '*'
       organizations = Organization.where(
         'name LIKE ? OR note LIKE ?', "%#{query}%", "%#{query}%"
       ).order('name').limit(limit)
diff --git a/app/models/ticket/search.rb b/app/models/ticket/search.rb
index 955743154..e045b3c79 100644
--- a/app/models/ticket/search.rb
+++ b/app/models/ticket/search.rb
@@ -146,7 +146,7 @@ returns
     # do query
     # - stip out * we already search for *query* -
     if query
-      query.delete! '*', ''
+      query.delete! '*'
       tickets_all = Ticket.select('DISTINCT(tickets.id)')
                     .where(access_condition)
                     .where( '( `tickets`.`title` LIKE ? OR `tickets`.`number` LIKE ? OR `ticket_articles`.`body` LIKE ? OR `ticket_articles`.`from` LIKE ? OR `ticket_articles`.`to` LIKE ? OR `ticket_articles`.`subject` LIKE ?)', "%#{query}%", "%#{query}%", "%#{query}%", "%#{query}%", "%#{query}%", "%#{query}%" )
diff --git a/app/models/user/search.rb b/app/models/user/search.rb
index 59f2a6bc6..6316d4bde 100644
--- a/app/models/user/search.rb
+++ b/app/models/user/search.rb
@@ -68,7 +68,7 @@ returns
 
       # fallback do sql query
       # - stip out * we already search for *query* -
-      query.delete! '*', ''
+      query.delete! '*'
       if params[:role_ids]
         users = User.joins(:roles).where( 'roles.id' => params[:role_ids] ).where(
           '(users.firstname LIKE ? or users.lastname LIKE ? or users.email LIKE ?) AND users.id != 1', "%#{query}%", "%#{query}%", "%#{query}%",