diff --git a/secop_psi/historywriter.py b/secop_psi/historywriter.py
index 49a0b7b..c337d25 100644
--- a/secop_psi/historywriter.py
+++ b/secop_psi/historywriter.py
@@ -43,9 +43,7 @@ def make_cvt_list(dt, tail=''):
     else:
         return []   # ArrayType, BlobType and TextType are ignored: too much data, probably not used
     result = []
-    print('START', dt)
     for subkey, elmtype in items:
-        print('MAKE_CVT_LIST', subkey, elmtype)
         for fun,  tail_, opts in make_cvt_list(elmtype, '%s.%s' % (tail, subkey)):
             def conv(value, key=subkey, func=fun):
                 try:
@@ -53,7 +51,6 @@ def make_cvt_list(dt, tail=''):
                 except KeyError:  # can not use value.get() because value might be a list
                     return None
             result.append((conv, tail_, opts))
-    print('END', result)
     return result
 
 
diff --git a/secop_psi/sea.py b/secop_psi/sea.py
index 6a97720..b90a19f 100644
--- a/secop_psi/sea.py
+++ b/secop_psi/sea.py
@@ -359,8 +359,6 @@ class SeaModule(Module):
             else:
                 pobj = Parameter(**kwds)
                 datatype = pobj.datatype
-            if name == 'cc' and key == 'value':
-                print('cc.value: %r %r' % (kwds, pobj))
             attributes[key] = pobj
             if not hasattr(cls, 'read_' + key):
                 def rfunc(self, cmd='hval /sics/%s/%s' % (sea_object, path)):