1 files changed, 2 insertions, 2 deletions
diff --git a/src/Monolog/Handler/DeduplicationHandler.php b/src/Monolog/Handler/DeduplicationHandler.php
index 5d95585..235b3b8 100644
--- a/src/Monolog/Handler/DeduplicationHandler.php
+++ b/src/Monolog/Handler/DeduplicationHandler.php
@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 
 /*
  * This file is part of the Monolog package.
@@ -144,7 +144,7 @@ class DeduplicationHandler extends BufferHandler
 
         while (!feof($handle)) {
             $log = fgets($handle);
-            if (substr($log, 0, 10) >= $timestampValidity) {
+            if ($log && substr($log, 0, 10) >= $timestampValidity) {
                 $validLogs[] = $log;
             }
         }