diff --git a/netd/BpfHandlerTest.cpp b/netd/BpfHandlerTest.cpp
index 925a92f..66a2f80 100644
--- a/netd/BpfHandlerTest.cpp
+++ b/netd/BpfHandlerTest.cpp
@@ -188,6 +188,14 @@
     expectMapEmpty(mFakeCookieTagMap);
 }
 
+TEST_F(BpfHandlerTest, TestTagSocketWithUnsupportedProtocol) {
+    int rawSocket = socket(AF_INET, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_RAW);
+    EXPECT_LE(0, rawSocket);
+    uint64_t sockCookie = getSocketCookie(rawSocket);
+    EXPECT_NE(NONEXISTENT_COOKIE, sockCookie);
+    EXPECT_EQ(-EPROTONOSUPPORT, mBh.tagSocket(rawSocket, TEST_TAG, TEST_UID, TEST_UID));
+}
+
 TEST_F(BpfHandlerTest, TestTagSocketWithoutPermission) {
     int sock = socket(AF_INET6, SOCK_STREAM | SOCK_CLOEXEC, 0);
     ASSERT_NE(-1, sock);