diff --git a/test/test_util.cpp b/test/test_util.cpp
index 4a50a26..dbf0a27 100644
--- a/test/test_util.cpp
+++ b/test/test_util.cpp
@@ -230,7 +230,7 @@
 TEST(IgnoredInterfaces, NotEmpty)
 {
     using ::testing::ContainerEq;
-    std::set<std::string_view> expected = {"eth0"};
+    std::unordered_set<std::string_view> expected = {"eth0"};
     auto ret = internal::parseInterfaces("eth0");
     EXPECT_THAT(ret, ContainerEq(expected));