diff --git a/presence/implementation/BUILD b/presence/implementation/BUILD
index dec31ae5..b7d5d149 100644
--- a/presence/implementation/BUILD
+++ b/presence/implementation/BUILD
@@ -74,7 +74,7 @@ cc_library(
         "service_controller_impl.h",
     ],
     defines = select({
-        ":norust_or_windows_or_android": ["USE_RUST_LDT=0"],
+        ":norust_or_windows_or_android": [],
         "//conditions:default": ["USE_RUST_LDT=1"],
     }),
     visibility = [
diff --git a/presence/implementation/advertisement_decoder_test.cc b/presence/implementation/advertisement_decoder_test.cc
index 4e8f597a..871f51dc 100644
--- a/presence/implementation/advertisement_decoder_test.cc
+++ b/presence/implementation/advertisement_decoder_test.cc
@@ -38,7 +38,6 @@ using ::nearby::ByteArray;  // NOLINT
 using ::nearby::internal::IdentityType;
 using ::nearby::internal::SharedCredential;  // NOLINT
 using ::testing::ElementsAre;
-using ::protobuf_matchers::EqualsProto;
 using ::testing::Matcher;
 using ::testing::Pointwise;
 using ::testing::Return;
@@ -55,7 +54,7 @@ ScanRequest GetScanRequest() {
                              IdentityType::IDENTITY_TYPE_PROVISIONED}};
 }
 
-#if USE_RUST_LDT == 1
+#ifdef USE_RUST_LDT
 ScanRequest GetScanRequest(std::vector<SharedCredential> credentials) {
   LegacyPresenceScanFilter scan_filter = {.remote_public_credentials =
                                               credentials};
diff --git a/presence/implementation/advertisement_factory_test.cc b/presence/implementation/advertisement_factory_test.cc
index 2631f85c..23ceaaa4 100644
--- a/presence/implementation/advertisement_factory_test.cc
+++ b/presence/implementation/advertisement_factory_test.cc
@@ -40,7 +40,7 @@ using ::testing::NiceMock;
 using ::testing::Return;
 using ::testing::status::StatusIs;
 
-#if USE_RUST_LDT == 1
+#ifdef USE_RUST_LDT
 LocalCredential CreateLocalCredential(IdentityType identity_type) {
   // Values copied from LDT tests
   ByteArray seed({204, 219, 36, 137, 233, 252, 172, 66, 179, 147, 72,
diff --git a/presence/implementation/ldt.cc b/presence/implementation/ldt.cc
index 898dc677..01126dd2 100644
--- a/presence/implementation/ldt.cc
+++ b/presence/implementation/ldt.cc
@@ -22,7 +22,7 @@
 #include "absl/status/statusor.h"
 #include "absl/strings/str_format.h"
 #include "absl/strings/string_view.h"
-#if USE_RUST_LDT == 1
+#ifdef USE_RUST_LDT
 #include "third_party/beto-core/src/nearby/presence/ldt_np_adv_ffi/include/np_ldt.h"
 #else
 #include "presence/implementation/np_ldt.h"
diff --git a/presence/implementation/ldt.h b/presence/implementation/ldt.h
index f9f5c23e..6a563505 100644
--- a/presence/implementation/ldt.h
+++ b/presence/implementation/ldt.h
@@ -20,7 +20,7 @@
 
 #include "absl/status/statusor.h"
 #include "absl/strings/string_view.h"
-#if USE_RUST_LDT == 1
+#ifdef USE_RUST_LDT
 #include "third_party/beto-core/src/nearby/presence/ldt_np_adv_ffi/include/np_ldt.h"
 #else
 #include "presence/implementation/np_ldt.h"
diff --git a/presence/implementation/ldt_test.cc b/presence/implementation/ldt_test.cc
index 60423dc3..ff7dc5bc 100644
--- a/presence/implementation/ldt_test.cc
+++ b/presence/implementation/ldt_test.cc
@@ -29,7 +29,7 @@ namespace {
 using ::nearby::ByteArray;
 using ::nearby::internal::SharedCredential;
 
-#if USE_RUST_LDT == 1
+#ifdef USE_RUST_LDT
 
 // Test data from Android tests.
 constexpr absl::string_view kKeySeedBase16 =