diff --git a/server/SHServ/Controllers/DevicesRESTAPIController.php b/server/SHServ/Controllers/DevicesRESTAPIController.php
index 0b86c60..d38b189 100644
--- a/server/SHServ/Controllers/DevicesRESTAPIController.php
+++ b/server/SHServ/Controllers/DevicesRESTAPIController.php
@@ -11,7 +11,7 @@
 	protected function withScanLock(callable $callback) {
 		$tmpDir   = sys_get_temp_dir();
 		$lockFile = $tmpDir . '/shserv-scan.lock';
-		$debugLog = dirname(__DIR__, 2) . '/Cache/scan-debug.log';
+		$debugLog = $tmpDir . '/shserv-scan-debug.log';
 
 		$log = function($msg) use ($debugLog) {
 			$line = date('Y-m-d H:i:s') . ' [' . getmypid() . '] ' . $msg . PHP_EOL;