diff --git a/TunnelKit/Sources/Core/RoutingTableEntry.h b/TunnelKit/Sources/Core/RoutingTableEntry.h
index 2a30754..8c6910f 100644
--- a/TunnelKit/Sources/Core/RoutingTableEntry.h
+++ b/TunnelKit/Sources/Core/RoutingTableEntry.h
@@ -41,7 +41,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (BOOL)isDefault;
 - (BOOL)matchesDestination:(NSString *)destination;
-- (NSArray<RoutingTableEntry *> *)partitioned;
+- (nullable NSArray<RoutingTableEntry *> *)partitioned;
 
 @end
 
diff --git a/TunnelKit/Sources/Core/RoutingTableEntry.m b/TunnelKit/Sources/Core/RoutingTableEntry.m
index febe7e2..211889f 100644
--- a/TunnelKit/Sources/Core/RoutingTableEntry.m
+++ b/TunnelKit/Sources/Core/RoutingTableEntry.m
@@ -249,7 +249,7 @@ static NSString *RoutingTableEntryName(struct sockaddr *sa, struct sockaddr *mas
     }
 }
 
-- (NSArray<RoutingTableEntry *> *)partitioned
+- (nullable NSArray<RoutingTableEntry *> *)partitioned
 {
     NSMutableArray<RoutingTableEntry *> *segments = [[NSMutableArray alloc] init];
     const int halfPrefix = (int)(self.prefix + 1);
diff --git a/TunnelKit/Sources/Protocols/OpenVPN/AppExtension/OpenVPNTunnelProvider.swift b/TunnelKit/Sources/Protocols/OpenVPN/AppExtension/OpenVPNTunnelProvider.swift
index 0c46660..43e6606 100644
--- a/TunnelKit/Sources/Protocols/OpenVPN/AppExtension/OpenVPNTunnelProvider.swift
+++ b/TunnelKit/Sources/Protocols/OpenVPN/AppExtension/OpenVPNTunnelProvider.swift
@@ -741,7 +741,7 @@ extension OpenVPNTunnelProvider: OpenVPNSessionDelegate {
                 let gateway = table.defaultGateway4()?.gateway(),
                 let route = table.broadestRoute4(matchingDestination: gateway) {
 
-                route.partitioned().forEach {
+                route.partitioned()?.forEach {
                     let destination = $0.network()
                     guard let netmask = $0.networkMask() else {
                         return
@@ -758,7 +758,7 @@ extension OpenVPNTunnelProvider: OpenVPNSessionDelegate {
                 let gateway = table.defaultGateway6()?.gateway(),
                 let route = table.broadestRoute6(matchingDestination: gateway) {
 
-                route.partitioned().forEach {
+                route.partitioned()?.forEach {
                     let destination = $0.network()
                     let prefix = $0.prefix()