diff --git a/benchmark/phpbench.json.dist b/benchmark/phpbench.json.dist
index 6cbc516ec..38f17955a 100644
--- a/benchmark/phpbench.json.dist
+++ b/benchmark/phpbench.json.dist
@@ -5,7 +5,7 @@
     "runner.bootstrap": "vendor/autoload.php",
     "runner.file_pattern": "*Bench.php",
     "runner.path": "src",
-    "runner.timeout": "60",
+    "runner.timeout": 60,
     "runner.php_config": { "memory_limit": "1G" },
     "runner.iterations": 3,
     "runner.revs": 10