diff --git a/source/core/StarThread_unix.cpp b/source/core/StarThread_unix.cpp
index 7d255f4..a87ee29 100644
--- a/source/core/StarThread_unix.cpp
+++ b/source/core/StarThread_unix.cpp
@@ -131,12 +131,16 @@ struct MutexImpl {
   }
 
   void lock() {
+#ifndef STAR_SYSTEM_MACOS
     timespec ts;
     clock_gettime(CLOCK_REALTIME, &ts);
     ts.tv_sec += 60;
     if (pthread_mutex_timedlock(&mutex, &ts) != 0) {
       Logger::warn("Mutex lock is taking too long, printing stack");
       printStack("Mutex::lock");
+#else
+    {
+#endif
       pthread_mutex_lock(&mutex);
     }
   }
@@ -206,12 +210,16 @@ struct RecursiveMutexImpl {
   }
 
   void lock() {
+#ifndef STAR_SYSTEM_MACOS
     timespec ts;
     clock_gettime(CLOCK_REALTIME, &ts);
     ts.tv_sec += 60;
     if (pthread_mutex_timedlock(&mutex, &ts) != 0) {
       Logger::warn("RecursiveMutex lock is taking too long, printing stack");
       printStack("RecursiveMutex::lock");
+#else
+    {
+#endif
       pthread_mutex_lock(&mutex);
     }
   }