diff --git a/mongoose/index.d.ts b/mongoose/index.d.ts
index a0508e7223..92655b871d 100644
--- a/mongoose/index.d.ts
+++ b/mongoose/index.d.ts
@@ -748,6 +748,18 @@ declare module "mongoose" {
    *     ...
    *   }
    * });
+   *
+   * Note: the properties have Object as a fallback type: | Object
+   *   because this interface does not apply to a schematype that
+   *   does not have a type property. Ex:
+   * new Schema({
+   *   name: {
+   *     first: String,    // since name does not have a "type" property
+   *     last: String      //   first and last can have any valid type
+   *     ...
+   *   }
+   * });
+   *
    * References:
    * - http://mongoosejs.com/docs/schematypes.html
    * - http://mongoosejs.com/docs/api.html#schema_Schema.Types
@@ -763,7 +775,7 @@ declare module "mongoose" {
      * Getters allow you to transform the representation of the data as it travels
      * from the raw mongodb document to the value that you see.
      */
-    get?: (value: T, schematype?: this) => T;
+    get?: (value: T, schematype?: this) => T | Object;
 
     /** Declares the index options for this schematype. */
     index?: SchemaTypeOpts.IndexOpts | boolean | string;
@@ -774,7 +786,8 @@ declare module "mongoose" {
      */
     required?: SchemaTypeOpts.RequiredFn<T> |
       boolean | [boolean, string] |
-      string | [string, string];
+      string | [string, string] |
+      Object;
 
     /**
      * Sets default select() behavior for this path.
@@ -782,19 +795,19 @@ declare module "mongoose" {
      * if it should be excluded by default. This setting can be overridden at
      * the query level.
      */
-    select?: boolean;
+    select?: boolean | Object;
 
     /**
      * Setters allow you to transform the data before it gets to the raw mongodb
      * document and is set as a value on an actual key.
      */
-    set?: (value: T, schematype?: this) => T;
+    set?: (value: T, schematype?: this) => T | Object;
 
     /** Declares a sparse index. */
-    sparse?: boolean;
+    sparse?: boolean | Object;
 
     /** Declares a full text index. */
-    text?: boolean;
+    text?: boolean | Object;
 
     /**
      * Adds validator(s) for this document path.
@@ -803,50 +816,53 @@ declare module "mongoose" {
      */
     validate?: RegExp | [RegExp, string] |
       SchemaTypeOpts.ValidateFn<T> | [SchemaTypeOpts.ValidateFn<T>, string] |
-      SchemaTypeOpts.ValidateOpts | SchemaTypeOpts.ValidateOpts[];
+      SchemaTypeOpts.ValidateOpts | SchemaTypeOpts.ValidateOpts[] |
+      Object;
 
     /** Declares an unique index. */
-    unique?: boolean;
+    unique?: boolean | Object;
 
 
     /* Options for specific schema types (String, Number, Date, etc.) */
     /** String only - Adds an enum validator */
-    enum?: T[] | SchemaTypeOpts.EnumOpts<T>;
+    enum?: T[] | SchemaTypeOpts.EnumOpts<T> | Object;
     /** String only - Adds a lowercase setter. */
-    lowercase?: boolean;
+    lowercase?: boolean | Object;
     /** String only - Sets a regexp validator. */
-    match?: RegExp | [RegExp, string];
+    match?: RegExp | [RegExp, string] | Object;
     /** String only - Sets a maximum length validator. */
-    maxlength?: number | [number, string];
+    maxlength?: number | [number, string] | Object;
     /** String only - Sets a minimum length validator. */
-    minlength?: number | [number, string];
+    minlength?: number | [number, string] | Object;
     /** String only - Adds a trim setter. */
-    trim?: boolean;
+    trim?: boolean | Object;
     /** String only - Adds an uppercase setter. */
-    uppercase?: boolean;
+    uppercase?: boolean | Object;
 
     /**
      * Date, Number only - Sets a minimum number validator.
      * Sets a minimum date validator.
      */
     min?: number | [number, string] |
-      Date | [Date, string];
+      Date | [Date, string] |
+      Object;
 
     /**
      * Date, Number only - Sets a maximum number validator.
      * Sets a maximum date validator.
      */
     max?: number | [number, string] |
-      Date | [Date, string];
+      Date | [Date, string] |
+      Object;
 
     /**
      * Date only - Declares a TTL index (rounded to the nearest second)
      * for Date types only.
      */
-    expires?: number | string;
+    expires?: number | string | Object;
 
     /** ObjectId only - Adds an auto-generated ObjectId default if turnOn is true. */
-    auto?: boolean;
+    auto?: boolean | Object;
 
     [other: string]: any;
   }
diff --git a/mongoose/mongoose-tests.ts b/mongoose/mongoose-tests.ts
index 95badddedd..be63241296 100644
--- a/mongoose/mongoose-tests.ts
+++ b/mongoose/mongoose-tests.ts
@@ -318,7 +318,14 @@ new mongoose.Schema({
   hidden: Boolean,
   meta: {
     votes: Number,
-    favs:  Number
+    favs:  Number,
+    text: String
+  },
+  meta2: {
+    text: mongoose.Schema.Types.Number,
+    select: {
+      type: String
+    }
   }
 });
 new mongoose.Schema({ name: { type: String, index: true }});