diff --git a/automotive/can/aidl/default/service.cpp b/automotive/can/aidl/default/service.cpp
index eb45167..ef04cfd 100644
--- a/automotive/can/aidl/default/service.cpp
+++ b/automotive/can/aidl/default/service.cpp
@@ -20,12 +20,11 @@
 #include <android/binder_manager.h>
 #include <android/binder_process.h>
 
-namespace android::hardware::automotive::can {
-
 using namespace std::string_literals;
+using namespace android;
 using ::aidl::android::hardware::automotive::can::CanController;
 
-extern "C" int main() {
+int main() {
     base::SetDefaultTag("CanController");
     base::SetMinimumLogSeverity(base::VERBOSE);
 
@@ -40,4 +39,3 @@
     LOG(FATAL) << "CanController exited unexpectedly!";
     return EXIT_FAILURE;
 }
-}  // namespace android::hardware::automotive::can
diff --git a/automotive/can/aidl/default/tools/configurator/canhalconfigurator.cpp b/automotive/can/aidl/default/tools/configurator/canhalconfigurator.cpp
index 94e77b4..87a4497 100644
--- a/automotive/can/aidl/default/tools/configurator/canhalconfigurator.cpp
+++ b/automotive/can/aidl/default/tools/configurator/canhalconfigurator.cpp
@@ -98,7 +98,11 @@
     return true;
 }
 
-extern "C" int main(int argc, char* argv[]) {
+}  // namespace android::hardware::automotive::can
+
+int main(int argc, char* argv[]) {
+    using namespace android::hardware::automotive::can;
+
     std::string configFilepath = static_cast<std::string>(kDefaultConfigPath);
 
     // allow for CLI specification of a config file.
@@ -114,5 +118,3 @@
     }
     return 0;
 }
-
-}  // namespace android::hardware::automotive::can
diff --git a/macsec/aidl/default/service.cpp b/macsec/aidl/default/service.cpp
index faf3a09..9d5d3bf 100644
--- a/macsec/aidl/default/service.cpp
+++ b/macsec/aidl/default/service.cpp
@@ -20,12 +20,11 @@
 #include <android/binder_manager.h>
 #include <android/binder_process.h>
 
-namespace android::hardware::macsec {
-
 using namespace std::string_literals;
+using namespace android;
 using ::aidl::android::hardware::macsec::MacsecPskPlugin;
 
-extern "C" int main() {
+int main() {
     base::SetDefaultTag("MacsecPskPlugin");
     base::SetMinimumLogSeverity(base::VERBOSE);
 
@@ -40,4 +39,3 @@
     LOG(FATAL) << "MacsecPskPlugin exited unexpectedly!";
     return EXIT_FAILURE;
 }
-}  // namespace android::hardware::macsec