diff --git a/includes/Pager/AbuseLogPager.php b/includes/Pager/AbuseLogPager.php
index 6f01c2817..6acf8cfaf 100644
--- a/includes/Pager/AbuseLogPager.php
+++ b/includes/Pager/AbuseLogPager.php
@@ -270,7 +270,7 @@ class AbuseLogPager extends ReverseChronologicalPager {
 				$actions_taken,
 				$escaped_comments,
 				// Passing $7 to 'abusefilter-log-entry' will do nothing, as it's not used.
-				$diffLink
+				$diffLink ?: ''
 			)->params( $row->afl_user_text )->parse();
 		}