diff --git a/matlab/posterior_sampler_core.m b/matlab/posterior_sampler_core.m
index c677e02cc..d88ae742a 100644
--- a/matlab/posterior_sampler_core.m
+++ b/matlab/posterior_sampler_core.m
@@ -126,9 +126,13 @@ for curr_block = fblck:nblck,
         % Matlab/Octave cluster). Therefore the trap.
         %
         % Set the random number generator type (the seed is useless but needed by the function)
-        set_dynare_seed(options_.DynareRandomStreams.algo, options_.DynareRandomStreams.seed);
+        if ~isoctave
+            set_dynare_seed(options_.DynareRandomStreams.algo, options_.DynareRandomStreams.seed);
+        else
+            set_dynare_seed(options_.DynareRandomStreams.seed+curr_block);
+        end
         % Set the state of the RNG
-        set_dynare_random_generator_state(record.InitialSeeds(curr_block).Unifor, record.InitialSeeds(curr_block).Normal);
+        set_dynare_random_generator_state(record.InitialSeeds(curr_block).Unifor, record.InitialSeeds(curr_block).Normal);            
     catch
         % If the state set by master is incompatible with the slave, we only reseed 
         set_dynare_seed(options_.DynareRandomStreams.seed+curr_block);