diff --git a/openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h b/openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
index 4e30c74a5c..b774ab6c72 100644
--- a/openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
+++ b/openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
@@ -46,19 +46,19 @@
 #define NR_SCHED_LOCK(lock)                                        \
   do {                                                             \
     int rc = pthread_mutex_lock(lock);                             \
-    AssertFatal(rc == 0, "error while locking scheduler mutex\n"); \
+    AssertFatal(rc == 0, "error while locking scheduler mutex, pthread_mutex_lock() returned %d\n", rc); \
   } while (0)
 
 #define NR_SCHED_UNLOCK(lock)                                      \
   do {                                                             \
     int rc = pthread_mutex_unlock(lock);                           \
-    AssertFatal(rc == 0, "error while locking scheduler mutex\n"); \
+    AssertFatal(rc == 0, "error while locking scheduler mutex, pthread_mutex_unlock() returned %d\n", rc); \
   } while (0)
 
 #define NR_SCHED_ENSURE_LOCKED(lock)\
   do {\
     int rc = pthread_mutex_trylock(lock); \
-    AssertFatal(rc == EBUSY, "this function should be called with the scheduler mutex locked\n");\
+    AssertFatal(rc == EBUSY, "this function should be called with the scheduler mutex locked, pthread_mutex_trylock() returned %d\n", rc);\
   } while (0)
 
 /* Commmon */