bug#818132

--- a/ofxparse/ofxparse.py
+++ b/ofxparse/ofxparse.py
@@ -28,7 +28,7 @@
         return BeautifulSoup(fh)
     except ImportError:
         from BeautifulSoup import BeautifulStoneSoup
-        return BeautifulStoneSoup(fh)
+        return BeautifulStoneSoup(fh, "lxml")
 
 
 def try_decode(string, encoding):