diff --git a/synchronization/read_write_lock.md b/synchronization/read_write_lock.md
index fbc6db2..bb75d9f 100644
--- a/synchronization/read_write_lock.md
+++ b/synchronization/read_write_lock.md
@@ -49,8 +49,8 @@ func (r *Router) Add(peer *Peer) {
 	// Lock write table while add operation
 	// A blocked Lock call excludes new readers from acquiring the lock.
 	r.RWMutex.Lock()
-	defer r.RWMutex.Unlock()
 	r.table[peer.Socket()] = peer
+        r.RWMutex.Unlock()
 }
 
 // Delete removes a connection from router
@@ -58,8 +58,8 @@ func (r *Router) Delete(peer *Peer) {
 	// Lock write table while delete operation
 	// A blocked Lock call excludes new readers from acquiring the lock.
 	r.RWMutex.Lock()
-	defer r.RWMutex.Unlock()
 	delete(r.table, peer.Socket())
+        r.RWMutex.Unlock()
 }
 ```
 
@@ -107,4 +107,4 @@ go func(r *Router){
 	// read locks are like counters.. until counter = 0 Write can be acquired
 }(router)
 
-```
\ No newline at end of file
+```