diff --git a/exercises/practice/parallel-letter-frequency/.meta/config.json b/exercises/practice/parallel-letter-frequency/.meta/config.json
index fbcd09c9..0311e182 100644
--- a/exercises/practice/parallel-letter-frequency/.meta/config.json
+++ b/exercises/practice/parallel-letter-frequency/.meta/config.json
@@ -15,5 +15,6 @@
       ".meta/example.h"
     ]
   },
+  "test_runner": false,
   "blurb": "Count the frequency of letters in texts using parallel computation."
 }