diff --git a/microcircuit/network.py b/microcircuit/network.py
index 4257c6a..89d8468 100644
--- a/microcircuit/network.py
+++ b/microcircuit/network.py
@@ -221,7 +221,7 @@ def setup(self, sim, simulator_specific_info, common_params):
                     else:
                         simulator_specific_info.create_poissons(
                             sim, target_layer, target_pop, rate,
-                            this_target_pop, w_ext)
+                            this_target_pop, w_ext, script_rng)
 
                 if common_params.thalamic_input:
                     # Thalamic inputs
diff --git a/microcircuit/spinnaker_specific_info.py b/microcircuit/spinnaker_specific_info.py
index d7571fe..83f77d0 100644
--- a/microcircuit/spinnaker_specific_info.py
+++ b/microcircuit/spinnaker_specific_info.py
@@ -174,7 +174,8 @@ def create_neural_population(self, sim, n_neurons, layer, pop):
             label=layer+pop, additional_parameters=additional_params)
 
     def create_poissons(
-            self, sim, target_layer, target_pop, rate, this_target_pop, w_ext):
+            self, sim, target_layer, target_pop, rate, this_target_pop, w_ext,
+            script_rng):
         """ creates the SSP's
 
         :param sim:
@@ -189,7 +190,7 @@ def create_poissons(
             print(
                 'connecting Poisson generators to'
                 ' {} {}'.format(target_layer, target_pop))
-        additional_params = {'seed': self.pyseed}
+        additional_params = {'seed': int(script_rng.next() * 0xFFFFFFFF)}
         if self.use_split_synapse_neuron_model:
             from spynnaker.pyNN.extra_algorithms.splitter_components import (
                 SplitterPoissonDelegate)