peerconn.go | 3 +++

diff --git a/peerconn.go b/peerconn.go
index f9bec8e1d51c3138bde109e0438216dce34a7dd7..1b585233eb8b6b982abf26659c40469cca4a36f0 100644
--- a/peerconn.go
+++ b/peerconn.go
@@ -628,6 +628,9 @@ 			// as we have more write buffer space.
 			return false
 		}
 		cn.requestsLowWater = len(cn.requests) / 2
+		if len(cn.requests) == 0 {
+			return cn.setInterested(false)
+		}
 	}
 	return true
 }