diff --git a/packages/metadata/src/Decorated/storage/fromMetadata/storage.spec.ts b/packages/metadata/src/Decorated/storage/fromMetadata/storage.spec.ts
index caabe65f16..946527d99d 100644
--- a/packages/metadata/src/Decorated/storage/fromMetadata/storage.spec.ts
+++ b/packages/metadata/src/Decorated/storage/fromMetadata/storage.spec.ts
@@ -13,10 +13,6 @@ describe('storage', (): void => {
   it('should return well known keys', (): void => {
     expect(typeof storage.substrate).toBe('object');
 
-    // @deprecated: The ':auth:' (authorityPrefix) and ':auth:len' (authorityCount) storage keys
-    // have been removed in https://github.com/paritytech/substrate/pull/2802
-    expect(storage.substrate.authorityCount).toBeTruthy();
-    expect(storage.substrate.authorityPrefix).toBeTruthy();
     expect(storage.substrate.changesTrieConfig).toBeTruthy();
     expect(storage.substrate.childStorageKeyPrefix).toBeTruthy();
     expect(storage.substrate.code).toBeTruthy();
diff --git a/packages/metadata/src/Decorated/storage/fromMetadata/substrate.spec.ts b/packages/metadata/src/Decorated/storage/fromMetadata/substrate.spec.ts
index f557360d40..51e3bd251e 100644
--- a/packages/metadata/src/Decorated/storage/fromMetadata/substrate.spec.ts
+++ b/packages/metadata/src/Decorated/storage/fromMetadata/substrate.spec.ts
@@ -4,21 +4,11 @@
 
 import { TypeRegistry } from '@polkadot/types';
 
-import { authorityCount, authorityPrefix, changesTrieConfig, childStorageKeyPrefix, code, extrinsicIndex, heapPages } from './substrate';
+import { changesTrieConfig, childStorageKeyPrefix, code, extrinsicIndex, heapPages } from './substrate';
 
 describe('substrate', (): void => {
   const registry = new TypeRegistry();
 
-  // @deprecated: The ':auth:' (authorityPrefix) and ':auth:len' (authorityCount) storage keys
-  // have been removed in https://github.com/paritytech/substrate/pull/2802
-  it('authorityCount should return the correct storage key', (): void => {
-    expect(authorityCount(registry, 8)()).toEqual(Uint8Array.from([36, 58, 97, 117, 116, 104, 58, 108, 101, 110])); // Length-prefixed
-  });
-
-  it('authorityPrefix should return the correct storage key', (): void => {
-    expect(authorityPrefix(registry, 8)()).toEqual(Uint8Array.from([24, 58, 97, 117, 116, 104, 58])); // Length-prefixed
-  });
-
   it('changesTrieConfig should return the correct storage key', (): void => {
     expect(changesTrieConfig(registry, 8)()).toEqual(Uint8Array.from([52, 58, 99, 104, 97, 110, 103, 101, 115, 95, 116, 114, 105, 101])); // Length-prefixed
   });
diff --git a/packages/metadata/src/Decorated/storage/fromMetadata/substrate.ts b/packages/metadata/src/Decorated/storage/fromMetadata/substrate.ts
index 30ff5eeded..4dd2535623 100644
--- a/packages/metadata/src/Decorated/storage/fromMetadata/substrate.ts
+++ b/packages/metadata/src/Decorated/storage/fromMetadata/substrate.ts
@@ -31,18 +31,6 @@ function createRuntimeFunction (method: string, key: string, { documentation, ty
     }, { key, metaVersion, skipHashing: true });
 }
 
-// @deprecated: The ':auth:' (authorityPrefix) and ':auth:len' (authorityCount) storage keys
-// have been removed in https://github.com/paritytech/substrate/pull/2802
-export const authorityCount = createRuntimeFunction('authorityCount', ':auth:len', {
-  documentation: 'Number of authorities.',
-  type: 'u32'
-});
-
-export const authorityPrefix = createRuntimeFunction('authorityPrefix', ':auth:', {
-  documentation: 'Prefix under which authorities are stored.',
-  type: 'u32'
-});
-
 export const code = createRuntimeFunction('code', ':code', {
   documentation: 'Wasm code of the runtime.',
   type: 'Bytes'