diff --git a/openmp/runtime/src/kmp_wrapper_getpid.h b/openmp/runtime/src/kmp_wrapper_getpid.h
index 32ede3ed715b..3ae9947299e3 100644
--- runtime/src/kmp_wrapper_getpid.h.orig
+++ runtime/src/kmp_wrapper_getpid.h
@@ -22,7 +22,11 @@
 #include <unistd.h>
 #if KMP_OS_DARWIN
 // OS X
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
 #define __kmp_gettid() pthread_mach_thread_np(pthread_self())
+#else
+#define __kmp_gettid() syscall(SYS_gettid)
+#endif
 #elif KMP_OS_FREEBSD || KMP_OS_DRAGONFLY
 #include <pthread_np.h>
 #define __kmp_gettid() pthread_getthreadid_np()