diff --git a/evals/frugalReads.eval.ts b/evals/frugalReads.eval.ts
index fe2096ca18..f04043f8bb 100644
--- a/evals/frugalReads.eval.ts
+++ b/evals/frugalReads.eval.ts
@@ -38,7 +38,7 @@ describe('Frugal reads eval', () => {
       })(),
     },
     prompt:
-      'Fix all linter errors in linter_mess.ts manually by editing the file. Run eslint directly to find them.',
+      'Fix all linter errors in linter_mess.ts manually by editing the file. Run eslint directly to find them. Do not run the file.',
     assert: async (rig, result) => {
       const logs = rig.readToolLogs();