diff --git a/src/Hprose/Http/Client.php b/src/Hprose/Http/Client.php
index 216f043a..f9f3b5b6 100644
--- a/src/Hprose/Http/Client.php
+++ b/src/Hprose/Http/Client.php
@@ -336,6 +336,11 @@ public function loop() {
                         --$count;
                         if ($msgs_in_queue === 0) break;
                     }
+
+                    // See https://bugs.php.net/bug.php?id=61141
+                    if (curl_multi_select($multicurl) === -1) {
+                        usleep(100);
+                    }
                 }
             }
             catch (Exception $e) {