diff --git a/HISTORY.md b/HISTORY.md
index eca780354..384470d69 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,6 +1,11 @@
 # Snap! (BYOB) History
 
 ## in development:
+* **Notable Fixes:**
+    * only bind rings that replace list items to the list as environment if they are referred to by a non-numerical index (OOP 2.0)
+
+### 2024-09-12
+* threads: only bind rings replaced in a list to the list as environment if they are referred to by a non-numerical index (OOP 2.0)
 
 ## 10.1.1:
 * **Notable Fixes:**
diff --git a/src/threads.js b/src/threads.js
index fd6b73183..fabb29ff7 100644
--- a/src/threads.js
+++ b/src/threads.js
@@ -2293,7 +2293,8 @@ Process.prototype.doReplaceInList = function (index, list, element) {
             idx = 0;
         }
     }
-    if (element instanceof Context) { // OOP 2.0: treat ring as method
+    if (element instanceof Context && (parseFloat(idx) !== +idx)) {
+        // OOP 2.0: treat ring as method
         element = this.reportContextFor(element, list);
     }
     list.bind(idx, element);