diff --git a/seminar/admin.py b/seminar/admin.py
index 6a491766..738225a1 100644
--- a/seminar/admin.py
+++ b/seminar/admin.py
@@ -348,8 +348,11 @@ admin.site.register(Novinky, NovinkyAdmin)
 
 def jmeno_organizatora(obj):
     ''' vraci jmeno organizatora '''
-    return ('%s \"%s\" %s' %
-            (obj.user.first_name, obj.prezdivka, obj.user.last_name))
+    jmeno = obj.user.first_name
+    if obj.prezdivka:
+        jmeno = jmeno + ' "' + obj.prezdivka + '"'
+    jmeno = jmeno + ' ' + obj.user.last_name
+    return jmeno
 jmeno_organizatora.short_description = 'Jméno organizátora'
 
 def je_organizator_aktivni(obj):