diff --git a/blockchain/example_test.go b/blockchain/example_test.go
index da0cce79..432602df 100644
--- a/blockchain/example_test.go
+++ b/blockchain/example_test.go
@@ -69,7 +69,7 @@ func ExampleBlockChain_ProcessBlock() {
 	fmt.Printf("Block accepted. Is it an orphan?: %v", isOrphan)
 
 	// Output:
-	// Failed to process block: already have block 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
+	// Failed to process block: already have block 9c89283ba0f3227f6c03b70216b9f665f0118d5e0fa729cedf4fb34d6a34f463
 }
 
 // This example demonstrates how to convert the compact "bits" in a block header