diff --git a/blogthon.cgi b/blogthon.cgi
index 0aed854..4f35d81 100755
--- a/blogthon.cgi
+++ b/blogthon.cgi
@@ -120,6 +120,9 @@ if not re.match("^.*\/$", blog_url):
 if not os.path.exists(entries_dir):
     errorpage("Directory \"%s\" does not exist!" % entries_dir)
 
+if not os.access(entries_dir, os.W_OK):
+    errorpage("Directory \"%s\" is not writable!" % entries_dir)
+
 if not os.path.exists(staticpages_dir):
     errorpage("Directory \"%s\" does not exist!" % staticpages_dir)