diff --git a/plugins/modules/quota.py b/plugins/modules/quota.py
index e7e4c420..0d6a4f04 100644
--- a/plugins/modules/quota.py
+++ b/plugins/modules/quota.py
@@ -128,7 +128,7 @@ options:
     volumes_types:
         description:
             - Per-driver volume count quotas.  Keys should be
-              prefixed with C(gigabytes_) values should be ints.
+              prefixed with C(volumes_) values should be ints.
         type: dict
     project:
         description: Unused, kept for compatability