connection.go | 3 ++-

diff --git a/connection.go b/connection.go
index 148f362430ccb079f9bd4787eae7f9e10f21bc5c..4c2a1d2556cf2c0976971fd99970545dbfc1ebbb 100644
--- a/connection.go
+++ b/connection.go
@@ -334,10 +334,11 @@ // Writes buffers to the socket from the write channel.
 func (conn *connection) writer() {
 	// Reduce write syscalls.
 	buf := bufio.NewWriterSize(conn.Socket, 0x8000) // 32 KiB
-	// Returns immediately if the buffer contains data.
+	// Receives when buf is not empty.
 	notEmpty := make(chan struct{}, 1)
 	for {
 		if buf.Buffered() != 0 {
+			// Make sure it's receivable.
 			select {
 			case notEmpty <- struct{}{}:
 			default: