diff --git a/extlib/XMPPHP/XMLStream.php b/extlib/XMPPHP/XMLStream.php
index bf0eaa7cc5..91d81df67e 100644
--- a/extlib/XMPPHP/XMLStream.php
+++ b/extlib/XMPPHP/XMLStream.php
@@ -335,8 +335,8 @@ class XMPPHP_XMLStream {
 				$secs = 0;
 				$usecs = 0;
 			} else {
-				$secs = floor($remaining / 1000000);
 				$usecs = $remaining % 1000000;
+				$secs = ($remaining - $usecs) / 1000000;
 			}
 			$this->log->log("stream_select(read, write, except, $secs, $usecs)",  XMPPHP_Log::LEVEL_VERBOSE);
 			$updated = @stream_select($read, $write, $except, $secs, $usecs);