diff --git a/src/h/internal.h b/src/h/internal.h
index 02e50f018..28f3dd6ed 100644
--- a/src/h/internal.h
+++ b/src/h/internal.h
@@ -270,9 +270,6 @@ extern void cl_write_object(cl_object x, cl_object stream);
 #  define pthread_mutex_unlock(x) (ReleaseMutex(*(HANDLE*)(x)) == 0)
 # else
 #  include <pthread.h>
-#  if defined(__APPLE__) || defined(freebsd)
-#   define PTHREAD_MUTEX_ERROR_CHECK_NP PTHREAD_MUTEX_ERROR_CHECK_NP
-#  endif
 # endif
 # define HASH_TABLE_LOCK(h) if ((h)->hash.lockable) if (pthread_mutex_lock(&(h)->hash.lock)) ecl_internal_error("")
 # define PACKAGE_LOCK(p) if (pthread_mutex_lock(&(p)->pack.lock)) ecl_internal_error("")