diff --git a/accounts/abi/unpack_test.go b/accounts/abi/unpack_test.go
index 1e99520ae8..3ceeae6340 100644
--- a/accounts/abi/unpack_test.go
+++ b/accounts/abi/unpack_test.go
@@ -909,7 +909,7 @@ func TestUnpackTuple(t *testing.T) {
 			},
 		},
 		FieldT: T{
-			big.NewInt(0), big.NewInt(1),
+			big.NewInt(0).SetBits([]big.Word{}), big.NewInt(1),
 		},
 		A: big.NewInt(1),
 	}
@@ -918,7 +918,7 @@ func TestUnpackTuple(t *testing.T) {
 	if err != nil {
 		t.Error(err)
 	}
-	if reflect.DeepEqual(ret, expected) {
+	if !reflect.DeepEqual(ret, expected) {
 		t.Error("unexpected unpack value")
 	}
 }