diff --git a/client/platforms/linux/daemon/wireguardutilslinux.cpp b/client/platforms/linux/daemon/wireguardutilslinux.cpp
index c16aa2c9..460a7fe1 100644
--- a/client/platforms/linux/daemon/wireguardutilslinux.cpp
+++ b/client/platforms/linux/daemon/wireguardutilslinux.cpp
@@ -139,7 +139,7 @@ bool WireguardUtilsLinux::addInterface(const InterfaceConfig& config) {
         if (config.m_killSwitchEnabled) {
             FirewallParams params { };
             params.dnsServers.append(config.m_dnsServer);
-            if (config.m_allowedIPAddressRanges.at(0).toString() == "0.0.0.0/0"){
+            if (config.m_allowedIPAddressRanges.contains(IPAddress("0.0.0.0/0"))) {
                 params.blockAll = true;
                 if (config.m_excludedAddresses.size()) {
                     params.allowNets = true;
diff --git a/client/platforms/macos/daemon/wireguardutilsmacos.cpp b/client/platforms/macos/daemon/wireguardutilsmacos.cpp
index 8affd724..e2802ebc 100644
--- a/client/platforms/macos/daemon/wireguardutilsmacos.cpp
+++ b/client/platforms/macos/daemon/wireguardutilsmacos.cpp
@@ -137,7 +137,8 @@ bool WireguardUtilsMacos::addInterface(const InterfaceConfig& config) {
       if (config.m_killSwitchEnabled) {
         FirewallParams params { };
         params.dnsServers.append(config.m_dnsServer);
-        if (config.m_allowedIPAddressRanges.at(0).toString() == "0.0.0.0/0"){
+
+        if (config.m_allowedIPAddressRanges.contains(IPAddress("0.0.0.0/0"))) {
           params.blockAll = true;
           if (config.m_excludedAddresses.size()) {
             params.allowNets = true;