diff --git a/classes/class-log.php b/classes/class-log.php
index 2a9f6c681..7d9f70ed8 100644
--- a/classes/class-log.php
+++ b/classes/class-log.php
@@ -194,7 +194,9 @@ public function is_record_excluded( $connector, $context, $action, $user = null,
 				'role'       => ( ! empty( $exclude_rule['author_or_role'] ) && ! is_numeric( $exclude_rule['author_or_role'] ) ) ? $exclude_rule['author_or_role'] : null,
 			);
 
-			$exclude_rules = array_filter( $exclude, 'strlen' );
+			$exclude_rules = array_filter( $exclude, function ( $val ) {
+				return !is_null( $val ) && strlen( $val );
+			});
 
 			if ( $this->record_matches_rules( $record, $exclude_rules ) ) {
 				$exclude_record = true;