diff --git a/versions/3.0.md b/versions/3.0.md
index 68610aee01..c6b0bd2b4f 100644
--- a/versions/3.0.md
+++ b/versions/3.0.md
@@ -993,7 +993,7 @@ When `example` or `examples` are provided in conjunction with the `schema` objec
 
 Field Name | Type | Description
 ---|:---:|---
-<a name="parameterContent"></a>content | Map[`string`, [Media Type Object](#mediaTypeObject)] | An map containing the representations for the parameter. The key is the media type and the value is used to describe it.
+<a name="parameterContent"></a>content | Map[`string`, [Media Type Object](#mediaTypeObject)] | A map containing the representations for the parameter. The key is the media type and the value is used to describe it.  The map MUST only contain one entry.
 
 ##### Style Values
 
@@ -1595,7 +1595,7 @@ Field Name | Type | Description
 ---|:---:|---
 <a name="responseDescription"></a>description | `string` | **Required.** A short description of the response. [CommonMark syntax](http://spec.commonmark.org/) can be used for rich text representation.
 <a name="responseHeaders"></a>headers | Map[`string`, [Header Object](#headerObject)  \| [Reference Object](#referenceObject)] |  Maps a header name to its definition. Note that [RFC7230](https://tools.ietf.org/html/rfc7230#page-22) states header names are case insensitive. If a response header is defined with the name `"Content-Type"`, it SHALL be ignored.
-<a name="responseContentObject"></a>content | Map[`string`, [Media Type Object](#mediaTypeObject)] | An map containing descriptions of potential response payloads. The key is the media type and the value is used to describe it.
+<a name="responseContentObject"></a>content | Map[`string`, [Media Type Object](#mediaTypeObject)] | A map containing descriptions of potential response payloads. The key is the media type and the value is used to describe it.
 <a name="responseLinks"></a>links | Map[`string`, [Link Object](#linkObject) \| [Reference Object](#referenceObject)] | A map of operations links that can be followed from the response. The key of the map is a short name for the link, following the naming constraints of the names for [Component Objects](#componentsObject). 
 
 This object can be extended with [Specification Extensions](#specificationExtensions).