diff --git a/Sources/Lib/CwlPreconditionTesting/CwlPreconditionTesting/CwlCatchBadInstruction.swift b/Sources/Lib/CwlPreconditionTesting/CwlPreconditionTesting/CwlCatchBadInstruction.swift
index 4d82f7ae2..3b6b2cd68 100644
--- a/Sources/Lib/CwlPreconditionTesting/CwlPreconditionTesting/CwlCatchBadInstruction.swift
+++ b/Sources/Lib/CwlPreconditionTesting/CwlPreconditionTesting/CwlCatchBadInstruction.swift
@@ -71,7 +71,7 @@ import Foundation
 		var behaviors = execTypesCountTuple<exception_behavior_t>()
 		var flavors = execTypesCountTuple<thread_state_flavor_t>()
 		var currentExceptionPort: mach_port_t = 0
-		var handlerThread: pthread_t? = nil
+		var handlerThread: pthread_t?
 
 		mutating func withUnsafeMutablePointers<R>(in block: (UnsafeMutablePointer<exception_mask_t>, UnsafeMutablePointer<mach_port_t>, UnsafeMutablePointer<exception_behavior_t>, UnsafeMutablePointer<thread_state_flavor_t>) -> R) -> R {
 			return masks.pointer { masksPtr in
diff --git a/Sources/Lib/CwlPreconditionTesting/CwlPreconditionTesting/CwlCatchBadInstructionPOSIX.swift b/Sources/Lib/CwlPreconditionTesting/CwlPreconditionTesting/CwlCatchBadInstructionPOSIX.swift
index bf3090811..34352dfd7 100644
--- a/Sources/Lib/CwlPreconditionTesting/CwlPreconditionTesting/CwlCatchBadInstructionPOSIX.swift
+++ b/Sources/Lib/CwlPreconditionTesting/CwlPreconditionTesting/CwlCatchBadInstructionPOSIX.swift
@@ -40,7 +40,7 @@ private func triggerLongJmp() {
 	longjmp(&env.0, 1)
 }
 
-private func sigIllHandler(code: Int32, info: UnsafeMutablePointer<__siginfo>?, uap: UnsafeMutableRawPointer?) -> Void {
+private func sigIllHandler(code: Int32, info: UnsafeMutablePointer<__siginfo>?, uap: UnsafeMutableRawPointer?) {
 	guard let context = uap?.assumingMemoryBound(to: ucontext64_t.self) else { return }
 
 	// 1. Decrement the stack pointer
diff --git a/Sources/Nimble/DSL+Wait.swift b/Sources/Nimble/DSL+Wait.swift
index f7f373fed..4f0a8a922 100644
--- a/Sources/Nimble/DSL+Wait.swift
+++ b/Sources/Nimble/DSL+Wait.swift
@@ -15,7 +15,7 @@ internal class NMBWait: NSObject {
         timeout: TimeInterval,
         file: FileString = #file,
         line: UInt = #line,
-        action: @escaping (@escaping () -> Void) -> Void) -> Void {
+        action: @escaping (@escaping () -> Void) -> Void) {
             return throwableUntil(timeout: timeout, file: file, line: line) { done in
                 action(done)
             }
@@ -26,7 +26,7 @@ internal class NMBWait: NSObject {
         timeout: TimeInterval,
         file: FileString = #file,
         line: UInt = #line,
-        action: @escaping (@escaping () -> Void) throws -> Void) -> Void {
+        action: @escaping (@escaping () -> Void) throws -> Void) {
             let awaiter = NimbleEnvironment.activeInstance.awaiter
             let leeway = timeout / 2.0
             let result = awaiter.performBlock { (done: @escaping (ErrorResult) -> Void) throws -> Void in
@@ -71,12 +71,12 @@ internal class NMBWait: NSObject {
     }
 
     #if SWIFT_PACKAGE
-    internal class func until(_ file: FileString = #file, line: UInt = #line, action: @escaping (() -> Void) -> Void) -> Void {
+    internal class func until(_ file: FileString = #file, line: UInt = #line, action: @escaping (() -> Void) -> Void) {
         until(timeout: 1, file: file, line: line, action: action)
     }
     #else
     @objc(untilFile:line:action:)
-    internal class func until(_ file: FileString = #file, line: UInt = #line, action: @escaping (() -> Void) -> Void) -> Void {
+    internal class func until(_ file: FileString = #file, line: UInt = #line, action: @escaping (() -> Void) -> Void) {
         until(timeout: 1, file: file, line: line, action: action)
     }
     #endif
@@ -93,6 +93,6 @@ internal func blockedRunLoopErrorMessageFor(_ fnName: String, leeway: TimeInterv
 /// 
 /// This function manages the main run loop (`NSRunLoop.mainRunLoop()`) while this function
 /// is executing. Any attempts to touch the run loop may cause non-deterministic behavior.
-public func waitUntil(timeout: TimeInterval = 1, file: FileString = #file, line: UInt = #line, action: @escaping (@escaping () -> Void) -> Void) -> Void {
+public func waitUntil(timeout: TimeInterval = 1, file: FileString = #file, line: UInt = #line, action: @escaping (@escaping () -> Void) -> Void) {
     NMBWait.until(timeout: timeout, file: file, line: line, action: action)
 }
diff --git a/Sources/Nimble/FailureMessage.swift b/Sources/Nimble/FailureMessage.swift
index 24b6c8fd6..d457bf3f9 100644
--- a/Sources/Nimble/FailureMessage.swift
+++ b/Sources/Nimble/FailureMessage.swift
@@ -12,8 +12,8 @@ public class FailureMessage: NSObject {
     /// An optional message that will be appended as a new line and provides additional details
     /// about the failure. This message will only be visible in the issue navigator / in logs but
     /// not directly in the source editor since only a single line is presented there.
-    public var extendedMessage: String? = nil
-    public var userDescription: String? = nil
+    public var extendedMessage: String?
+    public var userDescription: String?
 
     public var stringValue: String {
         get {
diff --git a/Sources/Nimble/Utils/Async.swift b/Sources/Nimble/Utils/Async.swift
index 943fd30f4..89b3710d8 100644
--- a/Sources/Nimble/Utils/Async.swift
+++ b/Sources/Nimble/Utils/Async.swift
@@ -27,7 +27,7 @@ internal protocol WaitLock {
 }
 
 internal class AssertionWaitLock: WaitLock {
-    private var currentWaiter: WaitingInfo? = nil
+    private var currentWaiter: WaitingInfo?
     init() { }
 
     func acquireWaitingLock(_ fnName: String, file: FileString, line: UInt) {
diff --git a/Tests/NimbleTests/Matchers/BeIdenticalToTest.swift b/Tests/NimbleTests/Matchers/BeIdenticalToTest.swift
index 609298873..90a90b396 100644
--- a/Tests/NimbleTests/Matchers/BeIdenticalToTest.swift
+++ b/Tests/NimbleTests/Matchers/BeIdenticalToTest.swift
@@ -51,7 +51,7 @@ final class BeIdenticalToTest: XCTestCase, XCTestCaseProvider {
     func testBeAlias() {
         let value = NSDate()
         expect(value).to(be(value))
-        expect(NSNumber(value:1)).toNot(be(NSString(stringLiteral: "turtles")))
+        expect(NSNumber(value:1)).toNot(be(NSString(stringLiteral: "turtles"))) // swiftlint:disable:this compiler_protocol_init
         #if _runtime(_ObjC)
             expect([1]).toNot(be([1]))
         #else