-    def normalize_text(self, text):
-        txt = super(TytulDziela, self).normalize_text(text)
+    EPUB_TAG = HTML_TAG = 'em'
+    EPUB_CLASS = HTML_CLASS = 'book-title'
+
+    def normalize_text(self, text, builder):
+        txt = super(TytulDziela, self).normalize_text(text, builder)