diff --git a/LibreNMS/Data/Store/Rrd.php b/LibreNMS/Data/Store/Rrd.php
index c6ce104672..d08e81393c 100644
--- a/LibreNMS/Data/Store/Rrd.php
+++ b/LibreNMS/Data/Store/Rrd.php
@@ -427,7 +427,7 @@ public function getRrdFiles(string $hostname, string|array $prefix = ''): array
 
         if ($this->rrdcached) {
             $output = $this->command('list', '/' . self::safeName($hostname));
-            $files = array_filter(explode("\n", trim($output)), fn($file) => str_starts_with($file, $prefix));
+            $files = array_filter(explode("\n", trim($output)), fn ($file) => str_starts_with($file, $prefix));
         } else {
             $files = glob($this->dirFromHost($hostname) . '/' . $prefix . '*.rrd') ?: [];
         }