diff --git a/iiod-responder.c b/iiod-responder.c
index 5cd00d24d..44aba2611 100644
--- a/iiod-responder.c
+++ b/iiod-responder.c
@@ -269,9 +269,12 @@ static int iiod_responder_reader_worker(struct iiod_responder *priv)
 		}
 
 		iio_mutex_lock(priv->lock);
-		if (ret <= 0)
+		if (ret <= 0) {
+			printf("Reader thread EOF\n");
 			break;
+		}
 
+		printf("Reader thread op:%u\n", cmd.op);
 		if (cmd.op != IIOD_OP_RESPONSE) {
 			iio_mutex_unlock(priv->lock);
 
@@ -293,6 +296,7 @@ static int iiod_responder_reader_worker(struct iiod_responder *priv)
 		if (!io) {
 			/* We received a response, but have no client waiting
 			 * for it, so drop it. */
+			printf("Reader thread no io\n");
 			iio_mutex_unlock(priv->lock);
 			iiod_discard_data(priv, cmd.code);
 			iio_mutex_lock(priv->lock);
@@ -316,6 +320,7 @@ static int iiod_responder_reader_worker(struct iiod_responder *priv)
 			iio_mutex_lock(priv->lock);
 
 			if (ret <= 0) {
+				printf("Reader thread no data\n");
 				iiod_responder_signal_io(io, (int32_t) ret);
 				iiod_io_unref_unlocked(io);
 				break;
@@ -325,6 +330,7 @@ static int iiod_responder_reader_worker(struct iiod_responder *priv)
 		}
 
 		/* Wake up the reader */
+		printf("Reader thread signal io %u\n", cmd.code);
 		iiod_responder_signal_io(io, cmd.code);
 		iiod_io_unref_unlocked(io);
 	}
@@ -332,6 +338,7 @@ static int iiod_responder_reader_worker(struct iiod_responder *priv)
 	priv->thrd_err_code = priv->thrd_stop ? -EINTR : (int) ret;
 	priv->thrd_stop = true;
 
+	printf("Reader thread stopped\n");
 	iiod_responder_cancel_responses(priv);
 	iio_task_stop(priv->write_task);
 	iio_task_flush(priv->write_task);
diff --git a/iiod/responder.c b/iiod/responder.c
index 7e3b93b11..26a646633 100644
--- a/iiod/responder.c
+++ b/iiod/responder.c
@@ -320,6 +320,7 @@ static int buffer_dequeue_block(void *priv, void *d)
 	unsigned int nb_data = 0;
 	intptr_t ret;
 
+	printf("Dequeue block\n");
 	ret = iio_block_dequeue(entry->block, false);
 	if (ret < 0)
 		goto out_send_response;
diff --git a/lock.c b/lock.c
index 1a1496883..85331c99d 100644
--- a/lock.c
+++ b/lock.c
@@ -171,6 +171,7 @@ int iio_thrd_join_and_destroy(struct iio_thrd *thrd)
 	if (ret < 0)
 		return ret;
 
+	printf("Joined thread %s(%lu)\n", thrd->name, thrd->thid);
 	free(thrd);
 
 	return (int)(intptr_t) retval;