diff --git a/src/amuse/ext/concurrent.py b/src/amuse/ext/concurrent.py
index db003ddcf8..1d5dd4c168 100644
--- a/src/amuse/ext/concurrent.py
+++ b/src/amuse/ext/concurrent.py
@@ -84,8 +84,8 @@ def distribute_on_root(self):
         units_dump = pickle.dumps(units)
         attributes_dump = pickle.dumps(attribute_names)
         
-        units_dump = numpy.fromstring(units_dump,dtype='uint8')
-        attributes_dump = numpy.fromstring(attributes_dump,dtype='uint8')
+        units_dump = numpy.frombuffer(units_dump,dtype='uint8')
+        attributes_dump = numpy.frombuffer(attributes_dump,dtype='uint8')
         
         sendbuffer = numpy.zeros(4,  dtype='int64')
         sendbuffer[0] = self.shared_id