diff --git a/pytr/api.py b/pytr/api.py
index d106626..7cded80 100644
--- a/pytr/api.py
+++ b/pytr/api.py
@@ -696,7 +696,7 @@ async def change_savings_plan(
     ):
         parameters = {
             "id": savings_plan_id,
-            "type": "createSavingsPlan",
+            "type": "changeSavingsPlan",
             "warningsShown": warnings_shown if warnings_shown else [],
             "parameters": {
                 "amount": amount,