--- a/tests/src/.outdated/scheduler.test.ts
+++ b/tests/src/.outdated/scheduler.test.ts
@@ -54,7 +54,7 @@
   });
 
   itSub.ifWithPallets('Can delay a transfer of an owned token', [Pallets.Scheduler], async ({helper}) => {
-    const collection = await helper.nft.mintDefaultCollection(alice);
+    const collection = await helper.nft.mintCollection(alice, {tokenPrefix: 'schd'});
     const token = await collection.mintToken(alice);
     const schedulerId = await helper.scheduler.makeScheduledId();
     const blocksBeforeExecution = 4;
@@ -104,7 +104,7 @@
   });
 
   itSub.ifWithPallets('Can cancel a scheduled operation which has not yet taken effect', [Pallets.Scheduler], async ({helper}) => {
-    const collection = await helper.nft.mintDefaultCollection(alice);
+    const collection = await helper.nft.mintCollection(alice, {tokenPrefix: 'schd'});
     const token = await collection.mintToken(alice);
 
     const scheduledId = await helper.scheduler.makeScheduledId();
@@ -357,7 +357,7 @@
   });
 
   itSub.ifWithPallets("Can't overwrite a scheduled ID", [Pallets.Scheduler, Pallets.TestUtils], async ({helper}) => {
-    const collection = await helper.nft.mintDefaultCollection(alice);
+    const collection = await helper.nft.mintCollection(alice, {tokenPrefix: 'schd'});
     const token = await collection.mintToken(alice);
 
     const scheduledId = await helper.scheduler.makeScheduledId();
@@ -387,7 +387,7 @@
   });
 
   itSub.ifWithPallets("Can't cancel a non-owned scheduled operation", [Pallets.Scheduler, Pallets.TestUtils], async ({helper}) => {
-    const collection = await helper.nft.mintDefaultCollection(alice);
+    const collection = await helper.nft.mintCollection(alice, {tokenPrefix: 'schd'});
     const token = await collection.mintToken(alice);
 
     const scheduledId = await helper.scheduler.makeScheduledId();
--- a/tests/src/util/playgrounds/unique.ts
+++ b/tests/src/util/playgrounds/unique.ts
@@ -1373,16 +1373,6 @@
     return this.getCollectionObject(this.helper.util.extractCollectionIdFromCreationResult(creationResult));
   }
 
-  async mintDefaultCollection(signer: TSigner, mode: 'NFT' | 'RFT'): Promise<UniqueCollectionBase> {
-    const defaultCreateCollectionParams: ICollectionCreationOptions = {
-      description: 'description',
-      name: 'name',
-      tokenPrefix: 'prfx',
-    };
-
-    return this.mintCollection(signer, defaultCreateCollectionParams, mode);
-  }
-
   getCollectionObject(_collectionId: number): any {
     return null;
   }
@@ -1565,10 +1555,6 @@
    */
   async mintCollection(signer: TSigner, collectionOptions: ICollectionCreationOptions = {}): Promise<UniqueNFTCollection> {
     return await super.mintCollection(signer, collectionOptions, 'NFT') as UniqueNFTCollection;
-  }
-
-  async mintDefaultCollection(signer: IKeyringPair): Promise<UniqueNFTCollection> {
-    return await super.mintDefaultCollection(signer, 'NFT') as UniqueNFTCollection;
   }
 
   /**
@@ -1755,10 +1741,6 @@
    */
   async mintCollection(signer: TSigner, collectionOptions: ICollectionCreationOptions = {}): Promise<UniqueRFTCollection> {
     return await super.mintCollection(signer, collectionOptions, 'RFT') as UniqueRFTCollection;
-  }
-
-  async mintDefaultCollection(signer: IKeyringPair): Promise<UniqueRFTCollection> {
-    return await super.mintDefaultCollection(signer, 'RFT') as UniqueRFTCollection;
   }
 
   /**