diff --git a/lib/SimpleSAML/Utilities.php b/lib/SimpleSAML/Utilities.php
index 033f0f691acb5d0bdbda4ce28a97a5003d57ba21..188ea4854b2b9a32ff0981730ab3574ce5505451 100644
--- a/lib/SimpleSAML/Utilities.php
+++ b/lib/SimpleSAML/Utilities.php
@@ -469,7 +469,7 @@ class SimpleSAML_Utilities {
 		$timestamp += $durDays * 24 * 60 * 60;
 		$timestamp += $durHours * 60 * 60;
 		$timestamp += $durMinutes * 60;
-		$timestamp += $durSecods;
+		$timestamp += $durSeconds;
 
 		return $timestamp;
 	}