diff --git a/pipewire-jack/src/pipewire-jack.c b/pipewire-jack/src/pipewire-jack.c
index 290c08558..c92e91605 100644
--- a/pipewire-jack/src/pipewire-jack.c
+++ b/pipewire-jack/src/pipewire-jack.c
@@ -1594,9 +1594,13 @@ static int client_node_port_use_buffers(void *object,
 			} else {
 				pw_log_warn("unknown buffer data type %d", d->type);
 			}
-			if (mlock(d->data, d->maxsize) < 0)
-				pw_log_warn(NAME" %p: Failed to mlock memory %p %u: %m", c,
-						d->data, d->maxsize);
+			if (mlock(d->data, d->maxsize) < 0) {
+				pw_log_warn(NAME" %p: Failed to mlock memory %p %u: %s", c,
+						d->data, d->maxsize,
+						errno == ENOMEM ?
+						"This is not a problem but for best performance, "
+						"consider increasing RLIMIT_MEMLOCK" : strerror(errno));
+			}
 		}
 
 		init_buffer(p, p->emptyptr, MAX_BUFFER_FRAMES);
diff --git a/src/modules/module-client-node/remote-node.c b/src/modules/module-client-node/remote-node.c
index ef03c4e04..cb5ce75c5 100644
--- a/src/modules/module-client-node/remote-node.c
+++ b/src/modules/module-client-node/remote-node.c
@@ -619,8 +619,11 @@ client_node_port_use_buffers(void *object,
 		bid->mem = mm;
 
 		if (mlock(mm->ptr, mm->size) < 0)
-			pw_log_warn("Failed to mlock memory %p %u: %m",
-					mm->ptr, mm->size);
+			pw_log_warn("Failed to mlock memory %p %u: %s",
+					mm->ptr, mm->size,
+					errno == ENOMEM ?
+					"This is not a problem but for best performance, "
+					"consider increasing RLIMIT_MEMLOCK" : strerror(errno));
 
 		size = sizeof(struct spa_buffer);
 		for (j = 0; j < buffers[i].buffer->n_metas; j++)