diff --git a/README.md b/README.md
index 14ecd22..56bcadd 100644
--- a/README.md
+++ b/README.md
@@ -330,7 +330,7 @@ The `requestModels` property allows you to define models for the HTTP Request of
 These will be autogenerated for you from TypeScript **by convention**.  
 The plugin will autogenerate a request model for every `put`, `patch` or `post` method based on the TypeScript type found by convention.    
 The look strategy will be by:  
-`${serverless.custom.documentation.apiNamespace}.${upper-case-name-of-function}.Request.Body`  
+`${serverless.custom.documentation.apiNamespace}.${upper-case-name-of-function}.Request.Body`. Note that any underscores (`_`) or hyphens (`-`) in function names will be excluded in the resolved type (e.g. the Serverless function `my_get-function` will resolve to `MyGetFunction` in Typescript)  
 
 For example, the following function:  
 ```yaml
diff --git a/package.json b/package.json
index 5411cfa..754a57e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "serverless-openapi-typescript",
-  "version": "1.0.9",
+  "version": "1.0.10",
   "description": "An extension of @conqa/serverless-openapi-documentation that also generates your OpenAPI models from TypeScript",
   "main": "dist/index.js",
   "scripts": {
diff --git a/src/serverless-openapi-typescript.ts b/src/serverless-openapi-typescript.ts
index f73fee9..c23186a 100644
--- a/src/serverless-openapi-typescript.ts
+++ b/src/serverless-openapi-typescript.ts
@@ -2,7 +2,7 @@ import type Serverless from "serverless";
 import fs from "fs";
 import yaml from "js-yaml";
 import {SchemaGenerator, createGenerator} from "ts-json-schema-generator";
-import {upperFirst, mergeWith, set, isArray, get, isEmpty } from "lodash" ;
+import {upperFirst, camelCase, mergeWith, set, isArray, get, isEmpty } from "lodash" ;
 import {ApiGatewayEvent} from "serverless/plugins/aws/package/compile/events/apiGateway/lib/validate";
 
 interface Options {
@@ -138,7 +138,7 @@ export default class ServerlessOpenapiTypeScript {
     }
 
     setModels(httpEvent, functionName) {
-        const definitionPrefix = `${this.serverless.service.custom.documentation.apiNamespace}.${upperFirst(functionName)}`;
+        const definitionPrefix = `${this.serverless.service.custom.documentation.apiNamespace}.${upperFirst(camelCase(functionName))}`;
         const method = httpEvent.method.toLowerCase();
         switch (method) {
             case 'delete':
diff --git a/test/fixtures/expect-openapi-hyphenated-functions.yml b/test/fixtures/expect-openapi-hyphenated-functions.yml
new file mode 100644
index 0000000..2f558ff
--- /dev/null
+++ b/test/fixtures/expect-openapi-hyphenated-functions.yml
@@ -0,0 +1,71 @@
+openapi: 3.1.0
+components:
+  schemas:
+    ProjectApi.CreateFunc.Request.Body:
+      type: 'null'
+    ProjectApi.CreateFunc.Response:
+      type: 'null'
+    ProjectApi.GetFunc.Response:
+      type: 'null'
+info:
+  title: Project
+  description: DummyDescription
+  version: 3a5b57df-54e7-4dd2-9423-d4674809c816
+paths:
+  /create:
+    post:
+      operationId: create-func
+      summary: Create Function
+      description: |
+        Create Function1
+        Create Function2
+        Create Function3
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/ProjectApi.CreateFunc.Request.Body'
+        description: ''
+      parameters: []
+      responses:
+        '200':
+          description: ''
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ProjectApi.CreateFunc.Response'
+      tags:
+        - FooBarTitle
+  /delete:
+    delete:
+      operationId: delete-all-func
+      summary: Delete Function
+      description: Delete
+      parameters: []
+      responses:
+        '204':
+          description: Status 204 Response
+          content: {}
+      tags:
+        - Project
+  /get:
+    get:
+      operationId: get_func
+      summary: Get Function
+      parameters: []
+      responses:
+        '200':
+          description: ''
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ProjectApi.GetFunc.Response'
+      tags:
+        - BazTitle
+tags:
+  - name: Project
+    description: DummyDescription
+  - name: FooBarTitle
+    description: FooBarDescription
+  - name: BazTitle
+    description: BazDescription
diff --git a/test/serverless-hyphenated-functions/api.d.ts b/test/serverless-hyphenated-functions/api.d.ts
new file mode 100644
index 0000000..956ff6e
--- /dev/null
+++ b/test/serverless-hyphenated-functions/api.d.ts
@@ -0,0 +1,14 @@
+export namespace ProjectApi {
+
+    export namespace CreateFunc {
+        export namespace Request {
+            export type Body = void
+        }
+
+        export type Response = void
+    }
+
+    export namespace GetFunc {
+        export type Response = void
+    }
+}
diff --git a/test/serverless-hyphenated-functions/resources/serverless.yml b/test/serverless-hyphenated-functions/resources/serverless.yml
new file mode 100644
index 0000000..2007dfd
--- /dev/null
+++ b/test/serverless-hyphenated-functions/resources/serverless.yml
@@ -0,0 +1,55 @@
+service: serverless-openapi-typescript-demo
+provider:
+  name: aws
+
+plugins:
+  - ../node_modules/@conqa/serverless-openapi-documentation
+  - ../src/index
+
+custom:
+  documentation:
+    title: 'Project'
+    description: DummyDescription
+    apiNamespace: ProjectApi
+    tags:
+       - name: FooBarTitle
+         description: FooBarDescription
+       - name: BazTitle
+         description: BazDescription
+
+
+functions:
+  create-func:
+    handler: handler.create
+    events:
+      - http:
+          documentation:
+            summary: "Create Function"
+            tag: FooBarTitle
+            description: |
+              Create Function1
+              Create Function2
+              Create Function3
+          path: create
+          method: post
+
+  delete-all-func:
+    handler: handler.delete
+    events:
+      - http:
+          documentation:
+            summary: "Delete Function"
+            description: "Delete"
+          path: delete
+          method: delete
+
+  get_func:
+    handler: handler.update
+    events:
+      - http:
+          documentation:
+            summary: "Get Function"
+            tag: BazTitle
+          path: get
+          method: get
+
diff --git a/test/serverless-openapi-typescript.spec.ts b/test/serverless-openapi-typescript.spec.ts
index 73abdbc..b74e331 100644
--- a/test/serverless-openapi-typescript.spec.ts
+++ b/test/serverless-openapi-typescript.spec.ts
@@ -14,6 +14,7 @@ describe('ServerlessOpenapiTypeScript', () => {
     describe.each`
     testCase         | projectName
     ${'Custom Tags'}  | ${'custom-tags'}
+    ${'Hyphenated Functions'}  | ${'hyphenated-functions'}
     ${'Full Project'} | ${'full'}
     `('when using $testCase', ({projectName}) => {