diff --git a/blogthon.cgi b/blogthon.cgi
index c6fd6ee..ce5e5c5 100755
--- a/blogthon.cgi
+++ b/blogthon.cgi
@@ -152,6 +152,9 @@ if not os.path.exists(plugins_dir):
 if not os.path.exists("linklist"):
     errorpage("File \"linklist\" does not exist!")
 
+if not os.path.exists(os.path.join(entries_dir, 'tags')) and tags == "True":
+    errorpage("You have to initialize your tags with <i>./blogthon.cgi -t</i> first!")
+
 if language == "de":
     blog_locale = (
             "Seiten",