diff --git a/src/Analyser/ResultCache/ResultCacheManager.php b/src/Analyser/ResultCache/ResultCacheManager.php
index 9631426b1b..a6f4743d18 100644
--- a/src/Analyser/ResultCache/ResultCacheManager.php
+++ b/src/Analyser/ResultCache/ResultCacheManager.php
@@ -722,7 +722,6 @@ private function getMeta(array $allAnalysedFiles, ?array $projectConfigArray): a
 			unset($projectConfigArray['parameters']['parallel']);
 			unset($projectConfigArray['parameters']['internalErrorsCountLimit']);
 			unset($projectConfigArray['parameters']['cache']);
-			unset($projectConfigArray['parameters']['reportUnmatchedIgnoredErrors']);
 			unset($projectConfigArray['parameters']['memoryLimitFile']);
 			unset($projectConfigArray['parametersSchema']);
 		}