diff --git a/ZcashLightClientKitTests/DerivationToolTests.swift b/ZcashLightClientKitTests/DerivationToolTests.swift
index 0b6cb2b8..1f2497c3 100644
--- a/ZcashLightClientKitTests/DerivationToolTests.swift
+++ b/ZcashLightClientKitTests/DerivationToolTests.swift
@@ -74,7 +74,7 @@ class DerivationToolTests: XCTestCase {
     }
     
     func testDeriveSecretKeyFromSeed() throws {
-        XCTAss	ertEqual(try DerivationTool.default.deriveTransparentPrivateKey(seed: [UInt8](seedData)), "127ec31a3482e53940aaefbc41c9621a344c84e4e16cc2c9af380d81b8f7bb74")
+        XCTAssertEqual(try DerivationTool.default.deriveTransparentPrivateKey(seed: [UInt8](seedData)), "127ec31a3482e53940aaefbc41c9621a344c84e4e16cc2c9af380d81b8f7bb74")
     }
     
 }
diff --git a/ZcashLightClientKitTests/utils/FakeService.swift b/ZcashLightClientKitTests/utils/FakeService.swift
index 929f153b..7e3b0518 100644
--- a/ZcashLightClientKitTests/utils/FakeService.swift
+++ b/ZcashLightClientKitTests/utils/FakeService.swift
@@ -18,6 +18,10 @@ struct LightWalletServiceMockResponse: LightWalletServiceResponse {
 }
 
 class MockLightWalletService: LightWalletService {
+    func fetchUTXOs(for tAddress: String, result: @escaping (Result<[UnspentTransactionOutputEntity], LightWalletServiceError>) -> Void) {
+        
+    }
+    
     
     
     private var service = LightWalletGRPCService(channel: ChannelProvider().channel())
diff --git a/ZcashLightClientKitTests/utils/Stubs.swift b/ZcashLightClientKitTests/utils/Stubs.swift
index 95927589..90b78677 100644
--- a/ZcashLightClientKitTests/utils/Stubs.swift
+++ b/ZcashLightClientKitTests/utils/Stubs.swift
@@ -81,6 +81,10 @@ class MockRustBackend: ZcashRustBackendWelding {
         false
     }
     
+    static func deriveTransparentPrivateKeyFromSeed(seed: [UInt8]) throws -> String? {
+        nil
+    }
+    
     static func initAccountsTable(dbData: URL, exfvks: [String]) throws -> Bool {
         false
     }