diff --git a/demo/openapi.yaml b/demo/openapi.yaml
index d10fdf73..5c8814c5 100644
--- a/demo/openapi.yaml
+++ b/demo/openapi.yaml
@@ -398,10 +398,16 @@ paths:
           content:
             application/json:
               schema:
-                type: object
-                additionalProperties:
-                  type: integer
-                  format: int32
+                allOf:
+                  - type: object
+                    additionalProperties:
+                      x-additionalPropertiesName: status
+                      type: integer
+                      format: int32
+                  - required:
+                    - inStock
+                    - soldOut
+
       security:
         - api_key: []
   /store/order:
diff --git a/src/common-elements/fields.ts b/src/common-elements/fields.ts
index ef1c07e8..1bfa5d92 100644
--- a/src/common-elements/fields.ts
+++ b/src/common-elements/fields.ts
@@ -45,6 +45,16 @@ export const RequiredLabel = styled(FieldLabel.withComponent('div'))`
   line-height: 1;
 `;
 
+export const RequiredImplicitFieldName = styled(FieldLabel.withComponent('div'))`
+  line-height: 20px;
+  white-space: nowrap;
+  font-size: 1em;
+  font-family: ${props => props.theme.typography.code.fontFamily};
+  font-style: normal;
+  font-weight: normal;
+  margin-left: 20px;
+`;
+
 export const RecursiveLabel = styled(FieldLabel)`
   color: ${({ theme }) => theme.colors.warning.main};
   font-size: 13px;
diff --git a/src/components/Fields/Field.tsx b/src/components/Fields/Field.tsx
index ef969b2d..31c00fe4 100644
--- a/src/components/Fields/Field.tsx
+++ b/src/components/Fields/Field.tsx
@@ -1,7 +1,11 @@
 import { observer } from 'mobx-react';
 import * as React from 'react';
 
-import { ClickablePropertyNameCell, RequiredLabel } from '../../common-elements/fields';
+import {
+  ClickablePropertyNameCell,
+  RequiredImplicitFieldName,
+  RequiredLabel,
+} from '../../common-elements/fields';
 import { FieldDetails } from './FieldDetails';
 
 import {
@@ -34,7 +38,7 @@ export class Field extends React.Component<FieldProps> {
   };
   render() {
     const { className, field, isLast } = this.props;
-    const { name, expanded, deprecated, required, kind } = field;
+    const { name, expanded, deprecated, required, requiredNames, kind } = field;
     const withSubSchema = !field.schema.isPrimitive && !field.schema.isCircular;
 
     const paramName = withSubSchema ? (
@@ -53,6 +57,13 @@ export class Field extends React.Component<FieldProps> {
       <PropertyNameCell className={deprecated ? 'deprecated' : undefined} kind={kind} title={name}>
         <PropertyBullet />
         {name}
+        {requiredNames && (
+          requiredNames.map((value, idx) => {
+            return (
+              <RequiredImplicitFieldName key={idx}> {value} </RequiredImplicitFieldName>
+            );
+          })
+        )}
         {required && <RequiredLabel> required </RequiredLabel>}
       </PropertyNameCell>
     );
diff --git a/src/components/__tests__/__snapshots__/DiscriminatorDropdown.test.tsx.snap b/src/components/__tests__/__snapshots__/DiscriminatorDropdown.test.tsx.snap
index 745c4cad..9ae0f7f9 100644
--- a/src/components/__tests__/__snapshots__/DiscriminatorDropdown.test.tsx.snap
+++ b/src/components/__tests__/__snapshots__/DiscriminatorDropdown.test.tsx.snap
@@ -15,6 +15,7 @@ exports[`Components SchemaView discriminator should correctly render discriminat
           "kind": "field",
           "name": "packSize",
           "required": false,
+          "requiredNames": undefined,
           "schema": SchemaModel {
             "activeOneOf": 0,
             "constraints": Array [],
@@ -65,6 +66,7 @@ exports[`Components SchemaView discriminator should correctly render discriminat
           "kind": "field",
           "name": "type",
           "required": true,
+          "requiredNames": undefined,
           "schema": SchemaModel {
             "activeOneOf": 0,
             "constraints": Array [],
diff --git a/src/services/models/Field.ts b/src/services/models/Field.ts
index 5302a09f..3195ff8c 100644
--- a/src/services/models/Field.ts
+++ b/src/services/models/Field.ts
@@ -35,6 +35,7 @@ export class FieldModel {
   schema: SchemaModel;
   name: string;
   required: boolean;
+  requiredNames?: string[];
   description: string;
   example?: string;
   deprecated: boolean;
@@ -57,6 +58,7 @@ export class FieldModel {
     this.name = infoOrRef.name || info.name;
     this.in = info.in;
     this.required = !!info.required;
+    this.requiredNames = info.requiredNames;
 
     let fieldSchema = info.schema;
     let serializationMime = '';
diff --git a/src/services/models/Schema.ts b/src/services/models/Schema.ts
index 6b228711..e8833664 100644
--- a/src/services/models/Schema.ts
+++ b/src/services/models/Schema.ts
@@ -287,16 +287,22 @@ function buildFields(
     sortByRequired(fields, !options.sortPropsAlphabetically ? schema.required : undefined);
   }
 
+  const explicitFieldNames = fields.map(field => field.name);
+  const implicitRequiredNames = schema.required === undefined ? [] :
+    schema.required.filter(fieldName => !explicitFieldNames.includes(fieldName));
+
   if (typeof additionalProps === 'object' || additionalProps === true) {
+    const additionalPropertiesName = typeof additionalProps === 'object'
+            ? additionalProps['x-additionalPropertiesName'] || 'property name'
+            : 'property name';
+
     fields.push(
       new FieldModel(
         parser,
         {
-          name: (typeof additionalProps === 'object'
-            ? additionalProps['x-additionalPropertiesName'] || 'property name'
-            : 'property name'
-          ).concat('*'),
-          required: false,
+          name: additionalPropertiesName.concat('*'),
+          requiredNames: implicitRequiredNames,
+          required: implicitRequiredNames.length > 0,
           schema: additionalProps === true ? {} : additionalProps,
           kind: 'additionalProperties',
         },
@@ -304,6 +310,23 @@ function buildFields(
         options,
       ),
     );
+  } else if (implicitRequiredNames.length > 0) {
+    const firstImplicitName = additionalProps === false ? '(incorrectly required)' :
+      (implicitRequiredNames.shift() || '');
+    fields.push(
+      new FieldModel(
+        parser,
+        {
+          name: firstImplicitName,
+          requiredNames: implicitRequiredNames,
+          required: true,
+          schema: {},
+          kind: 'field',
+        },
+        $ref + '/properties/' + firstImplicitName,
+        options,
+      ),
+    );
   }
 
   return fields;
diff --git a/src/types/open-api.d.ts b/src/types/open-api.d.ts
index 4fb04a83..8df65f33 100644
--- a/src/types/open-api.d.ts
+++ b/src/types/open-api.d.ts
@@ -84,6 +84,7 @@ export interface OpenAPIParameter {
   in?: OpenAPIParameterLocation;
   description?: string;
   required?: boolean;
+  requiredNames?: string[];
   deprecated?: boolean;
   allowEmptyValue?: boolean;
   style?: OpenAPIParameterStyle;
diff --git a/src/utils/openapi.ts b/src/utils/openapi.ts
index 2836cfed..d2eaf487 100644
--- a/src/utils/openapi.ts
+++ b/src/utils/openapi.ts
@@ -114,6 +114,9 @@ export function isPrimitiveType(schema: OpenAPISchema, type: string | undefined
   }
 
   if (type === 'object') {
+    if (schema.required !== undefined && schema.required.length !== 0) {
+      return false;
+    }
     return schema.properties !== undefined
       ? Object.keys(schema.properties).length === 0
       : schema.additionalProperties === undefined;