diff --git a/miosix/kernel/pthread.cpp b/miosix/kernel/pthread.cpp
index 4dfb3260130d0d92a12df48f88b766b2170bb572..d8b7d1f4d9908e2a72c5fab770271d29d5862859 100644
--- a/miosix/kernel/pthread.cpp
+++ b/miosix/kernel/pthread.cpp
@@ -296,6 +296,8 @@ static_assert(sizeof(IntrusiveList<CondData>)==sizeof(pthread_cond_t),"Invalid p
 int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
 {
     //attr is currently not considered
+    //NOTE: pthread_condattr_setclock is not supported, the only clock supported
+    //for pthread_cond_timedwait is CLOCK_MONOTONIC
     new (cond) IntrusiveList<CondData>; //Placement new as cond is a C type
     return 0;
 }