diff --git a/test/cpp/common/secure_auth_context_test.cc b/test/cpp/common/secure_auth_context_test.cc
index 6f8fb8f2cba..a1819dc4d62 100644
--- a/test/cpp/common/secure_auth_context_test.cc
+++ b/test/cpp/common/secure_auth_context_test.cc
@@ -59,12 +59,12 @@ TEST_F(SecureAuthContextTest, Properties) {
 
   SecureAuthContext context(ctx);
   std::vector<grpc::string> peer_identity = context.GetPeerIdentity();
-  EXPECT_EQ(2, peer_identity.size());
+  EXPECT_EQ(2u, peer_identity.size());
   EXPECT_EQ("chapi", peer_identity[0]);
   EXPECT_EQ("chapo", peer_identity[1]);
   EXPECT_EQ("name", context.GetPeerIdentityPropertyName());
   std::vector<grpc::string> bar = context.FindPropertyValues("foo");
-  EXPECT_EQ(1, bar.size());
+  EXPECT_EQ(1u, bar.size());
   EXPECT_EQ("bar", bar[0]);
 }
 
diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 0912b19243b..3791d152204 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -88,7 +88,7 @@ void CheckAuthContext(T* context) {
   std::shared_ptr<const AuthContext> auth_ctx = context->auth_context();
   std::vector<grpc::string> fake =
       auth_ctx->FindPropertyValues("transport_security_type");
-  EXPECT_EQ(1, fake.size());
+  EXPECT_EQ(1u, fake.size());
   EXPECT_EQ("fake", fake[0]);
   EXPECT_TRUE(auth_ctx->GetPeerIdentityPropertyName().empty());
   EXPECT_TRUE(auth_ctx->GetPeerIdentity().empty());