diff --git a/runtime/thread_list.cc b/runtime/thread_list.cc
index 1e5264c..da21479 100644
--- a/runtime/thread_list.cc
+++ b/runtime/thread_list.cc
@@ -1277,7 +1277,7 @@
 
   // Clear the TLS data, so that the underlying native thread is recognizably detached.
   // (It may wish to reattach later.)
-#ifdef __ANDROID__
+#ifdef ART_TARGET_ANDROID
   __get_tls()[TLS_SLOT_ART_THREAD_SELF] = nullptr;
 #else
   CHECK_PTHREAD_CALL(pthread_setspecific, (Thread::pthread_key_self_, nullptr), "detach self");