diff --git a/Sources/NetworkReachability/API/NetworkMonitor/NetworkMonitor.swift b/Sources/NetworkReachability/API/NetworkMonitor/NetworkMonitor.swift
index 0822401c..e5892116 100644
--- a/Sources/NetworkReachability/API/NetworkMonitor/NetworkMonitor.swift
+++ b/Sources/NetworkReachability/API/NetworkMonitor/NetworkMonitor.swift
@@ -246,7 +246,7 @@ public final class NetworkMonitor {
     private func updateDelegate(path: NWPath) {
         delegate?.networkMonitor(self, didUpdateNetworkPath: path)
     }
-    
+
     // MARK: - Deinit
 
     deinit {
diff --git a/Sources/NetworkReachability/API/ReachabilityMonitor/ReachabilityMonitor+Error.swift b/Sources/NetworkReachability/API/ReachabilityMonitor/ReachabilityMonitor+Error.swift
index 3aabd5f7..1d374aca 100644
--- a/Sources/NetworkReachability/API/ReachabilityMonitor/ReachabilityMonitor+Error.swift
+++ b/Sources/NetworkReachability/API/ReachabilityMonitor/ReachabilityMonitor+Error.swift
@@ -40,11 +40,14 @@ public extension ReachabilityMonitor {
         case failedToStartCallback(Int32)
 
         /// An error indicating the rachability observation could not be scheduled
-        case failedToSetRunLoop(Int32)
+        case failedToSetDispatchQueue(Int32)
 
         /// An error indicating the reachability couldn't be obtained from the system
         case failedToGetFlags(Int32)
 
+        /// An unknown error
+        case unknown
+
         // MARK: - LocalizedError
 
         public var errorDescription: String? {
@@ -53,10 +56,12 @@ public extension ReachabilityMonitor {
                 return "Couldn't create system reachability reference"
             case .failedToStartCallback:
                 return "Couldn't start system observability callback"
-            case .failedToSetRunLoop:
+            case .failedToSetDispatchQueue:
                 return "Couldn't schedule system observability callback"
             case .failedToGetFlags:
                 return "Couldn't get system reachability flags"
+            case .unknown:
+                return "Unknown ReachabilityMonitor Failure"
             }
         }
 
@@ -66,10 +71,12 @@ public extension ReachabilityMonitor {
                 return "SCError Code \(code)"
             case let .failedToStartCallback(code):
                 return "SCError Code \(code)"
-            case let .failedToSetRunLoop(code):
+            case let .failedToSetDispatchQueue(code):
                 return "SCError Code \(code)"
             case let .failedToGetFlags(code):
                 return "SCError Code \(code)"
+            case .unknown:
+                return "SCError Code Unknown"
             }
         }
 
diff --git a/Sources/NetworkReachability/API/ReachabilityMonitor/ReachabilityMonitor.swift b/Sources/NetworkReachability/API/ReachabilityMonitor/ReachabilityMonitor.swift
index 27be137a..aae21ed4 100644
--- a/Sources/NetworkReachability/API/ReachabilityMonitor/ReachabilityMonitor.swift
+++ b/Sources/NetworkReachability/API/ReachabilityMonitor/ReachabilityMonitor.swift
@@ -187,7 +187,11 @@ public final class ReachabilityMonitor {
                     let flags = try flags.get()
                     succeed(with: flags)
                 } catch {
-                    fail(with: error as! Error)
+                    if let error = error as? Error {
+                        fail(with: error)
+                    } else {
+                        fail(with: .unknown)
+                    }
                 }
             }
         }
@@ -226,7 +230,7 @@ public final class ReachabilityMonitor {
         if !SCNetworkReachabilitySetCallback(ref, callback, &context) {
             flags = .failure(.failedToStartCallback(SCError()))
         } else if !SCNetworkReachabilitySetDispatchQueue(ref, .reachabilityMonitorQueue) {
-            flags = .failure(.failedToSetRunLoop(SCError()))
+            flags = .failure(.failedToSetDispatchQueue(SCError()))
         } else {
             refreshFlags()
         }