diff --git a/rpc/client/rpc_test.go b/rpc/client/rpc_test.go
index 3eabaa97..767ae684 100644
--- a/rpc/client/rpc_test.go
+++ b/rpc/client/rpc_test.go
@@ -351,6 +351,11 @@ func TestTxSearch(t *testing.T) {
 			assert.True(t, proof.Proof.Verify(proof.Index, proof.Total, txHash, proof.RootHash))
 		}
 
+		// query by height
+		result, err = c.TxSearch(fmt.Sprintf("tx.height >= %d", txHeight), true, 1, 30)
+		require.Nil(t, err, "%+v", err)
+		require.Len(t, result.Txs, 1)
+
 		// we query for non existing tx
 		result, err = c.TxSearch(fmt.Sprintf("tx.hash='%X'", anotherTxHash), false, 1, 30)
 		require.Nil(t, err, "%+v", err)
diff --git a/rpc/test/helpers.go b/rpc/test/helpers.go
index b0dd77ec..0a9cd984 100644
--- a/rpc/test/helpers.go
+++ b/rpc/test/helpers.go
@@ -85,7 +85,7 @@ func GetConfig() *cfg.Config {
 		globalConfig.P2P.ListenAddress = tm
 		globalConfig.RPC.ListenAddress = rpc
 		globalConfig.RPC.GRPCListenAddress = grpc
-		globalConfig.TxIndex.IndexTags = "app.creator" // see kvstore application
+		globalConfig.TxIndex.IndexTags = "app.creator,tx.height" // see kvstore application
 	}
 	return globalConfig
 }