diff --git a/test/CDB_FederatedServerDiagnostics.sql b/test/CDB_FederatedServerDiagnostics.sql
index 1d803d5..9e40773 100644
--- a/test/CDB_FederatedServerDiagnostics.sql
+++ b/test/CDB_FederatedServerDiagnostics.sql
@@ -58,8 +58,8 @@ SELECT '1.5', cartodb.CDB_Federated_Server_Diagnostics(server => 'loopback') @>
 SELECT '1.6', cartodb.CDB_Federated_Server_Diagnostics(server => 'loopback') @> '{"server_options": {"host": "localhost", "port": "@@PGPORT@@", "updatable": "false", "extensions": "postgis", "fetch_size": "1000", "use_remote_estimate": "true"}}'::jsonb;
 
 \echo '%% It returns the network latency to the remote server'
-SELECT '2.1', (cartodb.CDB_Federated_Server_Diagnostics(server => 'loopback')->'server_latency_ms')::float > 0.0;
-SELECT '2.2', (cartodb.CDB_Federated_Server_Diagnostics(server => 'loopback')->'server_latency_ms')::float < 1000.0;
+SELECT '2.1', (cartodb.CDB_Federated_Server_Diagnostics(server => 'loopback')->'server_latency_ms')::text::float > 0.0;
+SELECT '2.2', (cartodb.CDB_Federated_Server_Diagnostics(server => 'loopback')->'server_latency_ms')::text::float < 1000.0;
 
 \echo '%% It raises an error if the wrong port is provided'
 SELECT 'C2', cartodb.CDB_Federated_Server_Register_PG(server => 'wrong-port'::text, config => '{