diff --git a/src/Analyser/IgnoredErrorHelper.php b/src/Analyser/IgnoredErrorHelper.php
index b38467f3a8..cf57521f3b 100644
--- a/src/Analyser/IgnoredErrorHelper.php
+++ b/src/Analyser/IgnoredErrorHelper.php
@@ -65,7 +65,7 @@ public function initialize(): IgnoredErrorHelperResult
 							'index' => $i,
 							'ignoreError' => $ignoreError,
 						];
-					} elseif (is_file($ignoreError['path'])) {
+					} elseif (@is_file($ignoreError['path'])) {
 						$normalizedPath = $this->fileHelper->normalizePath($ignoreError['path']);
 						$ignoreError['path'] = $normalizedPath;
 						$ignoreErrorsByFile[$normalizedPath][] = [