diff --git a/descriptor.md b/descriptor.md
index 70056fa6f..98821943e 100644
--- a/descriptor.md
+++ b/descriptor.md
@@ -38,7 +38,7 @@ The following fields contain the primary properties that constitute a Descriptor
 
 ### Reserved
 
-The following field keys MUST NOT be used in descriptors specified in other OCI specifications:
+The following field keys are reserved and MUST NOT be used by other specifications.
 
 - **`data`** *string*