diff --git a/src/net/net.go b/src/net/net.go
index 4b4ed129cc..7e172b708e 100644
--- a/src/net/net.go
+++ b/src/net/net.go
@@ -733,6 +733,7 @@ func (v *Buffers) consume(n int64) {
 			return
 		}
 		n -= ln0
+		(*v)[0] = nil
 		*v = (*v)[1:]
 	}
 }