diff --git a/core/jni/android_util_Process.cpp b/core/jni/android_util_Process.cpp
index 65061900ffbb6..2b0960fc24d48 100644
--- a/core/jni/android_util_Process.cpp
+++ b/core/jni/android_util_Process.cpp
@@ -287,7 +287,8 @@ static void android_os_Process_setCanSelfBackground(JNIEnv* env, jobject clazz,
 void android_os_Process_setThreadScheduler(JNIEnv* env, jclass clazz,
                                               jint tid, jint policy, jint pri)
 {
-#ifdef HAVE_SCHED_SETSCHEDULER
+// linux has sched_setscheduler(), others don't.
+#if defined(__linux__)
     struct sched_param param;
     param.sched_priority = pri;
     int rc = sched_setscheduler(tid, policy, &param);