diff --git a/BigInt-test-plan.md b/BigInt-test-plan.md
index 64e59b7..a01d70e 100644
--- a/BigInt-test-plan.md
+++ b/BigInt-test-plan.md
@@ -45,7 +45,7 @@
     - [x] attributes
     - [ ] constructor
     - [ ] toLocaleString (@thejoshwolfe)
-    - [x] toString (@cxielarko)
+    - [ ] toString (@cxielarko)
     - [x] valueOf (@thejoshwolfe)
 - [x] JSON.stringify
 - [x] Number constructor