diff --git a/vllm/distributed/device_communicators/shm_broadcast.py b/vllm/distributed/device_communicators/shm_broadcast.py
index c7810043b81e8..deeed1f21b4e1 100644
--- a/vllm/distributed/device_communicators/shm_broadcast.py
+++ b/vllm/distributed/device_communicators/shm_broadcast.py
@@ -392,7 +392,8 @@ class MessageQueue:
                             > VLLM_RINGBUFFER_WARNING_INTERVAL * n_warning):
                         logger.debug(
                             ("No available shared memory broadcast block found"
-                             " in %s second."),
+                             " in %s seconds. This typically happens when some"
+                             " processes are hanging."),
                             VLLM_RINGBUFFER_WARNING_INTERVAL,
                         )
                         n_warning += 1
@@ -455,7 +456,8 @@ class MessageQueue:
                             > VLLM_RINGBUFFER_WARNING_INTERVAL * n_warning):
                         logger.debug(
                             ("No available shared memory broadcast block found"
-                             " in %s second."),
+                             " in %s seconds. This typically happens when some"
+                             " processes are hanging."),
                             VLLM_RINGBUFFER_WARNING_INTERVAL,
                         )
                         n_warning += 1