diff --git a/functions.php b/functions.php
index b4a540e7e..06d7e7a74 100644
--- a/functions.php
+++ b/functions.php
@@ -5365,10 +5365,10 @@
 
 			// We setup a alarm to alert if the feed take more than 300s to update.
 			// => HANG alarm.
-			if(!$from_http) pcntl_alarm(300);
+			if(!$from_http && function_exists('pcntl_alarm')) pcntl_alarm(300);
 			update_rss_feed($link, $line["feed_url"], $line["id"], true);
 			// Cancel the alarm (the update went well)
-			if(!$from_http) pcntl_alarm(0);
+			if(!$from_http && function_exists('pcntl_alarm')) pcntl_alarm(0);
 
 			sleep(1); // prevent flood (FIXME make this an option?)
 		}