reader.go | 4 ++--

diff --git a/reader.go b/reader.go
index 53833e37038075d9f0fbef4880eca4418957155e..3b407ce34f823f247cfbd2f789b13678c1b52bab 100644
--- a/reader.go
+++ b/reader.go
@@ -70,10 +70,10 @@ }
 
 func (r *reader) SetReadahead(readahead int64) {
 	r.mu.Lock()
-	defer r.mu.Unlock()
 	r.readahead = readahead
 	r.readaheadFunc = nil
 	r.posChanged()
+	r.mu.Unlock()
 }
 
 // How many bytes are available to read. Max is the most we could require.
@@ -248,8 +248,8 @@
 // Hodor
 func (r *reader) Close() error {
 	r.t.cl.lock()
-	defer r.t.cl.unlock()
 	r.t.deleteReader(r)
+	r.t.cl.unlock()
 	return nil
 }