diff --git a/libs/collections/list.c b/libs/collections/list.c
index 4f89e32..b264e0c 100644
--- a/libs/collections/list.c
+++ b/libs/collections/list.c
@@ -447,7 +447,7 @@ GroundValue createListStruct() {
     groundAddFieldToStruct(&listStruct, "size", groundCreateValue(INT, 0));                                                  // number of elements
     groundAddFieldToStruct(&listStruct, "memSize", groundCreateValue(INT, sizeof(GroundValue) * STARTING_ELEMENTS));         // number of bytes allocated
     groundAddFieldToStruct(&listStruct, "capacity", groundCreateValue(INT, STARTING_ELEMENTS));                              // number of elements that can fit in the currently allocated space
-    groundAddFieldToStruct(&listStruct, "__ptr", groundCreateValue(INT, items));                                             // pointer to internal list struct
+    groundAddFieldToStruct(&listStruct, "private_ptr", groundCreateValue(INT, items));                                             // pointer to internal list struct
 
     groundAddFunctionToStruct(&listStruct, "append", appendToListStruct, INT, 1, INT, "value");                 // append item to end of list
     groundAddFunctionToStruct(&listStruct, "string", listStructToString, STRING, 0);                            // convert list to string