diff --git a/generator.go b/generator.go
index d60f688..9442411 100644
--- a/generator.go
+++ b/generator.go
@@ -40,7 +40,6 @@ func Init(opts ...InitOption) *Generator {
 
 	g.Debugger = initDebugger(g.debug, log.New(os.Stderr, "", 0))
 	g.persister.SetDebugger(g.Debugger)
-	g.persister.SetOutputPath(g.params.OutputPath())
 
 	return g
 }
diff --git a/workflow.go b/workflow.go
index fb30a50..a98daed 100644
--- a/workflow.go
+++ b/workflow.go
@@ -40,6 +40,7 @@ func (wf *standardWorkflow) Init(g *Generator) AST {
 	for _, pm := range wf.paramMutators {
 		pm(wf.params)
 	}
+	wf.persister.SetOutputPath(wf.params.OutputPath())
 
 	if wf.BiDi {
 		return ProcessCodeGeneratorRequestBidirectional(g, req)
diff --git a/workflow_test.go b/workflow_test.go
index 258ac43..07fe6f2 100644
--- a/workflow_test.go
+++ b/workflow_test.go
@@ -19,10 +19,14 @@ func TestStandardWorkflow_Init(t *testing.T) {
 
 	mutated := false
 
-	g := Init(ProtocInput(bytes.NewReader(b)), MutateParams(func(p Parameters) { mutated = true }))
+	g := Init(ProtocInput(bytes.NewReader(b)), MutateParams(func(p Parameters) {
+		mutated = true
+		p["output_path"] = "output/path"
+	}))
 	g.workflow.Init(g)
 
 	assert.True(t, mutated)
+	assert.Equal(t, "output/path", g.params.OutputPath())
 
 	t.Run("bidi", func(t *testing.T) {
 		mutated = false