diff --git a/bin/addons/base/ir/workflow/print_instance.py b/bin/addons/base/ir/workflow/print_instance.py
index 6aaef8abdd3..69f71f13793 100644
--- a/bin/addons/base/ir/workflow/print_instance.py
+++ b/bin/addons/base/ir/workflow/print_instance.py
@@ -44,7 +44,7 @@ def graph_get(cr, graph, wkf_id, nested=False, workitem={}):
 		if n['subflow_id'] and nested:
 			cr.execute('select * from wkf where id=%d', (n['subflow_id'],))
 			wkfinfo = cr.dictfetchone()
-			graph2 = pydot.Cluster('subflow'+str(n['subflow_id']), fontsize=10, label = "Subflow: "+n['name']+'\\nOSV: '+wkfinfo['osv'])
+			graph2 = pydot.Cluster('subflow'+str(n['subflow_id']), fontsize=12, label = "Subflow: "+n['name']+'\\nOSV: '+wkfinfo['osv'])
 			(s1,s2) = graph_get(cr, graph2, n['subflow_id'], nested,workitem)
 			graph.add_subgraph(graph2)
 			actfrom[n['id']] = s2
@@ -82,7 +82,7 @@ def graph_get(cr, graph, wkf_id, nested=False, workitem={}):
 
 		activity_from = actfrom[t['act_from']][1].get(t['signal'], actfrom[t['act_from']][0])
 		activity_to = actto[t['act_to']][1].get(t['signal'], actto[t['act_to']][0])
-		graph.add_edge(pydot.Edge( activity_from ,activity_to, fontsize=8, **args))
+		graph.add_edge(pydot.Edge( activity_from ,activity_to, fontsize=10, **args))
 	nodes = cr.dictfetchall()
 	cr.execute('select id from wkf_activity where flow_start=True and wkf_id=%d limit 1', (wkf_id,))
 	start = cr.fetchone()[0]
@@ -128,6 +128,11 @@ class report_graph_instance(object):
 			inst_id = cr.fetchone()[0]
 
 			graph = pydot.Dot(fontsize=16, label="\\n\\nWorkflow: %s\\n OSV: %s" % (wkfinfo['name'],wkfinfo['osv']))
+			graph.set('size', '10.7,7.3')
+			graph.set('center', '1')
+			graph.set('ratio', 'auto')
+			graph.set('rotate', '90')
+			graph.set('rankdir', 'LR')
 			graph_instance_get(cr, graph, inst_id, data.get('nested', False))
 			ps_string = graph.create_ps(prog='dot')
 		except:
@@ -138,7 +143,7 @@ class report_graph_instance(object):
 1.5 inch 15 inch moveto
 (No workflow available) show
 showpage'''
-		input, output = os.popen2('ps2pdf -sPAPERSIZE=a3 - -')
+		input, output = os.popen2('ps2pdf -sPAPERSIZE=a4 - -')
 		input.write(ps_string)
 		input.close()
 		self.result = output.read()