diff --git a/app/scodoc/TrivialFormulator.py b/app/scodoc/TrivialFormulator.py
index 1a0eeaf7..d14d5e6a 100644
--- a/app/scodoc/TrivialFormulator.py
+++ b/app/scodoc/TrivialFormulator.py
@@ -6,11 +6,9 @@
 
    E. Viennet 2005 - 2008
 
-   v 1.2
+   v 1.3 (python3)
 """
 
-from types import BooleanType, UnicodeType
-
 
 def TrivialFormulator(
     form_url,
@@ -740,7 +738,7 @@ def dict2js(d):
     r = []
     for k in d:
         v = d[k]
-        if type(v) == BooleanType:
+        if isinstance(v, bool):
             if v:
                 v = "true"
             else: