diff --git a/config.json b/config.json
index db4c74f..91b3471 100644
--- a/config.json
+++ b/config.json
@@ -17,7 +17,7 @@
     "highlightjs_language": "text"
   },
   "test_runner": {
-    "average_run_time": 10.0
+    "average_run_time": 10
   },
   "files": {
     "solution": [