diff --git a/api-ref/source/parameters.yaml b/api-ref/source/parameters.yaml
index 88d893f214..95215a9f84 100644
--- a/api-ref/source/parameters.yaml
+++ b/api-ref/source/parameters.yaml
@@ -1013,8 +1013,8 @@ delimiter:
   type: string
 end_marker:
   description: |
-    For a string value, x , returns container names
-    that are less than the marker value.
+    For a string value, `x` , constrains the list to items whose names
+    are less than `x`.
   in: query
   required: false
   type: string
@@ -1061,8 +1061,8 @@ limit:
   type: integer
 marker:
   description: |
-    For a string value, x , returns container names
-    that are greater than the marker value.
+    For a string value, `x` , constrains the list to items whose names
+    are greater than `x`.
   in: query
   required: false
   type: string