diff --git a/lib/private/Profiler/FileProfilerStorage.php b/lib/private/Profiler/FileProfilerStorage.php
index d583549332eab..b68038a65c4f2 100644
--- a/lib/private/Profiler/FileProfilerStorage.php
+++ b/lib/private/Profiler/FileProfilerStorage.php
@@ -99,7 +99,7 @@ public function purge(): void {
 		$iterator = new \RecursiveIteratorIterator($iterator, \RecursiveIteratorIterator::CHILD_FIRST);
 
 		foreach ($iterator as $file) {
-			$file = $file->getPathInfo();
+			$file = (string)$file->getPathInfo();
 			if (is_file($file)) {
 				unlink($file);
 			} else {