diff --git a/php/utils/fetching-coroutines.php b/php/utils/fetching-coroutines.php
index b54d84c..6dbb43f 100644
--- a/php/utils/fetching-coroutines.php
+++ b/php/utils/fetching-coroutines.php
@@ -288,12 +288,11 @@
 			do {
 				$curlm_status = curl_multi_exec($this->transfers, $curlm_active_transfer);
 				if ($curlm_active_transfer) {
-					// Block 1 second for pending transfers
+					// Block 1 second for active transfers
 					curl_multi_select($this->transfers, timeout: 1.0);
-					// curl_multi_select($transfers, timeout: 6.0);
 				}
-				$this->process_curl_activity();
-			} while ($curlm_active_transfer && $curlm_status == CURLM_OK);
+				$activity = $this->process_curl_activity();
+			} while (($activity || $curlm_active_transfer) && $curlm_status == CURLM_OK);
 
 			return $curlm_status;
 		}
@@ -324,8 +323,10 @@
 		 * Respond to new activity on enroled transfers.
 		 */
 		private function process_curl_activity() {
+			$activity = 0;
 			while (false !== ($info = curl_multi_info_read($this->transfers))) {
 				if ($info['msg'] != CURLMSG_DONE) continue;
+				$activity = 1;
 				/**
 				 * @var CurlHandle $handle
 				 */
@@ -338,6 +339,8 @@
 				$this->coroutines[$coroutine_id]->advance($handle);
 				$this->poll_coroutine_for_transfer($coroutine_id);
 			}
+
+			return $activity;
 		}
 	}