diff --git a/client.go b/client.go
index 8800571..d37ed33 100644
--- a/client.go
+++ b/client.go
@@ -501,6 +501,10 @@ func (c *Client) Do(req *Request, resp *Response) error {
 		m = c.ms
 	}
 	hc := m[string(host)]
+	if hc != nil {
+		atomic.AddInt32(&hc.pendingClientRequests, 1)
+		defer atomic.AddInt32(&hc.pendingClientRequests, -1)
+	}
 	c.mLock.RUnlock()
 	if hc == nil {
 		c.mLock.Lock()
@@ -545,12 +549,11 @@ func (c *Client) Do(req *Request, resp *Response) error {
 				startCleaner = true
 			}
 		}
+		atomic.AddInt32(&hc.pendingClientRequests, 1)
+		defer atomic.AddInt32(&hc.pendingClientRequests, -1)
 		c.mLock.Unlock()
 	}
 
-	atomic.AddInt32(&hc.pendingClientRequests, 1)
-	defer atomic.AddInt32(&hc.pendingClientRequests, -1)
-
 	if startCleaner {
 		go c.mCleaner(m)
 	}