diff --git a/server/RouteControllerTest.cpp b/server/RouteControllerTest.cpp
index 090b383..62540b9 100644
--- a/server/RouteControllerTest.cpp
+++ b/server/RouteControllerTest.cpp
@@ -30,6 +30,10 @@
     RouteControllerTest() {
         RouteController::iptablesRestoreCommandFunction = fakeExecIptablesRestoreCommand;
     }
+
+    int flushRoutes(uint32_t a) {
+        return RouteController::flushRoutes(a);
+    }
 };
 
 TEST_F(RouteControllerTest, TestGetRulePriority) {