diff --git a/pkg/core/blockchain_test.go b/pkg/core/blockchain_test.go
index aec494683..bb98bcc24 100644
--- a/pkg/core/blockchain_test.go
+++ b/pkg/core/blockchain_test.go
@@ -86,7 +86,6 @@ func TestGetHeader(t *testing.T) {
 	assert.Equal(t, block.Header(), header)
 
 	block = newBlock(2)
-	hash = block.Hash()
 	_, err = bc.GetHeader(block.Hash())
 	assert.Error(t, err)
 }