diff --git a/deepsubtree_test.go b/deepsubtree_test.go
index f5413ac2f..ee663696c 100644
--- a/deepsubtree_test.go
+++ b/deepsubtree_test.go
@@ -105,7 +105,6 @@ func TestDeepSubtreeWithUpdates(t *testing.T) {
 			require.NoError(err)
 			err = dst.AddProof(ics23proof)
 			require.NoError(err)
-			require.NoError(err)
 			dst.BuildTree(rootHash)
 			require.NoError(err)
 		}