diff --git a/Sources/TunnelKitCore/Endpoint.swift b/Sources/TunnelKitCore/Endpoint.swift
index 1947067..eac597d 100644
--- a/Sources/TunnelKitCore/Endpoint.swift
+++ b/Sources/TunnelKitCore/Endpoint.swift
@@ -30,7 +30,7 @@ import __TunnelKitUtils
 public struct Endpoint: RawRepresentable, Codable, Equatable, CustomStringConvertible {
 
     // XXX: simplistic match
-    private static let rx = NSRegularExpression("^([0-9A-Fa-f\\.:]+):(UDP[46]?|TCP[46]?):(\\d+)$")
+    private static let rx = NSRegularExpression("^([^\\s]+):(UDP[46]?|TCP[46]?):(\\d+)$")
 
     public let address: String