diff --git a/eth/tracers/native/call_flat.go b/eth/tracers/native/call_flat.go
index c5ed8e0624..fffbb29739 100644
--- a/eth/tracers/native/call_flat.go
+++ b/eth/tracers/native/call_flat.go
@@ -248,6 +248,7 @@ func (t *flatCallTracer) GetResult() (json.RawMessage, error) {
 
 // Stop terminates execution of the tracer at the first opportune moment.
 func (t *flatCallTracer) Stop(err error) {
+	t.reason = err
 	t.tracer.Stop(err)
 }