diff --git a/src/core/lib/security/security_connector/local_security_connector.cc b/src/core/lib/security/security_connector/local_security_connector.cc
index 29e60e56f6b..bd6a6a083d3 100644
--- a/src/core/lib/security/security_connector/local_security_connector.cc
+++ b/src/core/lib/security/security_connector/local_security_connector.cc
@@ -34,6 +34,7 @@
 #include "src/core/lib/security/transport/security_handshaker.h"
 #include "src/core/tsi/local_transport_security.h"
 
+#define GRPC_UDS_URL_PATTERN "unix:"
 #define GRPC_UDS_URL_SCHEME "unix"
 #define GRPC_LOCAL_TRANSPORT_SECURITY_TYPE "local"
 
@@ -189,8 +190,8 @@ grpc_security_status grpc_local_channel_security_connector_create(
   const grpc_arg* server_uri_arg =
       grpc_channel_args_find(args, GRPC_ARG_SERVER_URI);
   const char* server_uri_str = grpc_channel_arg_get_string(server_uri_arg);
-  if (strncmp(GRPC_UDS_URL_SCHEME, server_uri_str,
-              strlen(GRPC_UDS_URL_SCHEME)) != 0) {
+  if (strncmp(GRPC_UDS_URL_PATTERN, server_uri_str,
+              strlen(GRPC_UDS_URL_PATTERN)) != 0) {
     gpr_log(GPR_ERROR,
             "Invalid target_name to "
             "grpc_local_channel_security_connector_create()");
diff --git a/test/core/end2end/fixtures/h2_local.cc b/test/core/end2end/fixtures/h2_local.cc
index 9588a4ed0f0..cce8f1745a8 100644
--- a/test/core/end2end/fixtures/h2_local.cc
+++ b/test/core/end2end/fixtures/h2_local.cc
@@ -73,16 +73,21 @@ void chttp2_init_client_fullstack(grpc_end2end_test_fixture* f,
   grpc_channel_credentials_release(creds);
 }
 
-static int fail_server_auth_check(grpc_channel_args* server_args) {
+/*
+ * Check if server should fail auth check. If it is true, a different metadata
+ * processor will be installed that always fails in processing client's
+ * metadata.
+ */
+static bool fail_server_auth_check(grpc_channel_args* server_args) {
   size_t i;
   if (server_args == nullptr) return 0;
   for (i = 0; i < server_args->num_args; i++) {
     if (strcmp(server_args->args[i].key, FAIL_AUTH_CHECK_SERVER_ARG_NAME) ==
         0) {
-      return 1;
+      return true;
     }
   }
-  return 0;
+  return false;
 }
 
 static void process_auth_failure(void* state, grpc_auth_context* ctx,