--- a/tests/src/setSchemaVersion.test.ts
+++ b/tests/src/setSchemaVersion.test.ts
@@ -98,12 +98,16 @@
 
   it('execute setSchemaVersion with not correct schema version', async () => {
     await usingApi(async (api: ApiPromise) => {
+      const consoleError = console.error;
+      console.error = (message: string) => {};
       try {
         tx = api.tx.nft.setSchemaVersion(collectionIdForTesting, 'Test');
         await submitTransactionAsync(alice, tx);
       } catch (e) {
         // tslint:disable-next-line:no-unused-expression
         expect(e).to.be.exist;
+      } finally {
+        console.error = consoleError;
       }
     });
   });
--- a/tests/src/substrate/substrate-api.ts
+++ b/tests/src/substrate/substrate-api.ts
@@ -24,12 +24,17 @@
 
   // TODO: Remove, this is temporary: Filter unneeded API output 
   // (Jaco promised it will be removed in the next version)
-  // const consoleLog = console.log;
-  // console.log = (message: string) => {
-  //   if (!(message.includes("API/INIT: Capabilities detected") || message.includes("2021-"))) {
-  //     consoleLog(message);
-  //   }
-  // };
+  const consoleLog = console.log;
+  console.log = (message: string) => {
+    if (message.includes("API/INIT: Capabilities detected") || message.includes("2021-")) {}
+    else if (message.includes("StorageChangeSet:: WebSocket is not connected") || message.includes("2021-")) {}
+    else consoleLog(message);
+  };
+  const consoleErr = console.error;
+  console.error = (message: string) => {
+    if (message.includes("StorageChangeSet:: WebSocket is not connected") || message.includes("2021-")) {}
+    else consoleErr(message);
+  };
 
   try {
     await promisifySubstrate(api, async () => {
@@ -40,7 +45,8 @@
     })();
   } finally {
     await api.disconnect();
-    // console.log = consoleLog;
+    console.log = consoleLog;
+    console.error = consoleErr;
   }
 }
 
@@ -115,7 +121,7 @@
       await transaction.signAndSend(sender, ({ events = [], status }) => {
         const transactionStatus = getTransactionStatus(events, status);
 
-        console.log('transactionStatus', transactionStatus, 'events', events);
+        // console.log('transactionStatus', transactionStatus, 'events', events);
 
         if (transactionStatus == TransactionStatus.Success) {
           resolve(events);