diff --git a/WireGuard/WireGuard/ConfigFile/WgQuickConfigFileParser.swift b/WireGuard/WireGuard/ConfigFile/WgQuickConfigFileParser.swift
index 869d94e..863cd11 100644
--- a/WireGuard/WireGuard/ConfigFile/WgQuickConfigFileParser.swift
+++ b/WireGuard/WireGuard/ConfigFile/WgQuickConfigFileParser.swift
@@ -16,6 +16,7 @@ class WgQuickConfigFileParser {
         case noInterface
         case invalidInterface
         case multipleInterfaces
+        case multiplePeersWithSamePublicKey
         case invalidPeer
     }
 
@@ -149,6 +150,12 @@ class WgQuickConfigFileParser {
             }
         }
 
+        let peerPublicKeysArray = peerConfigurations.map { $0.publicKey }
+        let peerPublicKeysSet = Set<Data>(peerPublicKeysArray)
+        if (peerPublicKeysArray.count != peerPublicKeysSet.count) {
+            throw ParseError.multiplePeersWithSamePublicKey
+        }
+
         if let interfaceConfiguration = interfaceConfiguration {
             let tunnelConfiguration = TunnelConfiguration(interface: interfaceConfiguration)
             tunnelConfiguration.peers = peerConfigurations