diff --git a/app/tags.rb b/app/tags.rb
index c68734bb..a0431762 100644
--- a/app/tags.rb
+++ b/app/tags.rb
@@ -14,13 +14,15 @@ end
 post '/tags/remove' do
   require_login
 
-  DB.transaction {
-    params[:tags].each {|tag| current_site.remove_tag Tag[name: tag]}
-  }
+  if params[:tags].is_a?(Array)
+    DB.transaction {
+      params[:tags].each {|tag| current_site.remove_tag Tag[name: tag]}
+    }
+  end
 
   redirect request.referer
 end
 
 get '/tags/autocomplete/:name.json' do |name|
   Tag.autocomplete(name).collect {|t| t[:name]}.to_json
-end
\ No newline at end of file
+end