diff --git a/api-ref/source/v3/parameters.yaml b/api-ref/source/v3/parameters.yaml
index 17e0b906b80..a24b991b56c 100644
--- a/api-ref/source/v3/parameters.yaml
+++ b/api-ref/source/v3/parameters.yaml
@@ -1438,7 +1438,7 @@ key:
   type: string
 key_size:
   description: |
-    Size of encryption key, in bits. For example, 128 or 256. The default value
+    Size of encryption key, in bits. This is usually 256. The default value
     is None.
   in: body
   required: false