diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c099ef3..a4ff211 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -86,6 +86,6 @@ jobs:
           heroku_email: "nsakhilesh02@gmail.com"
           appdir: "tests/test-4"
           healthcheck: "https://akhileshns-hd-test-4.herokuapp.com/health"
-          checkString: "ok"
+          checkstring: "ok"
           procfile: "web: gunicorn index:app"
       - run: npm run test-action https://akhileshns-hd-test-4.herokuapp.com/
diff --git a/README.md b/README.md
index 60f150f..1d1864c 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,7 @@ The action comes with additional options that you can use to configure your proj
 | docker_heroku_process_type | false    | Type of heroku process (web, worker, etc). This option only makes sense when usedocker enabled. Defaults to "web" (Thanks to [singleton11](https://github.com/singleton11) for adding this feature) | web, worker                                           |
 | appdir                     | false    | Set if your app is located in a subdirectory                                                                                                                                                        | api, apis/python                                      |
 | healthcheck                | false    | A URL to which a healthcheck is performed (checks for 200 request)                                                                                                                                  | https://demo-rest-api.herokuapp.com                   |
+| checkstring                | false    | Value to check for when conducting healthcheck requests                                                                                                                                             | ok                                                    |
 | procfile                   | false    | Contents of the Procfile to save and deploy                                                                                                                                                         | web: npm start                                        |
 
 ## Examples
@@ -229,7 +230,7 @@ P.S: It is recommended that you setup a specific route such as **/health** for p
 
 ### Advanced Usage
 
-Additionally, if you are using a custom route for performing healthchecks, you can check for a specific value from this url using the **checkString** option of the action like so:
+Additionally, if you are using a custom route for performing healthchecks, you can check for a specific value from this url using the **checkstring** option of the action like so:
 
 _.github/workflows/main.yml_
 
@@ -252,10 +253,10 @@ jobs:
           heroku_app_name: "YOUR APP's NAME" #Must be unique in Heroku
           heroku_email: "YOUR EMAIL"
           healthcheck: "https://[YOUR APP's NAME].herokuapp.com/health"
-          checkString: "ok"
+          checkstring: "ok"
 ```
 
-This will essentially check if the value returned by sending a GET request to the **healthcheck** url is equal to the **checkString**
+This will essentially check if the value returned by sending a GET request to the **healthcheck** url is equal to the **checkstring**
 
 ## Environment Variables
 
diff --git a/action.yml b/action.yml
index 224b2b8..ad70d82 100644
--- a/action.yml
+++ b/action.yml
@@ -40,7 +40,7 @@ inputs:
     description: "A URL to which a healthcheck is performed (checks for 200 request)"
     required: false
     default: ""
-  checkString:
+  checkstring:
     description: "Value to check for when conducting healthcheck request"
     required: false
     default: ""
diff --git a/index.js b/index.js
index db26e9e..e44d843 100644
--- a/index.js
+++ b/index.js
@@ -89,7 +89,7 @@ let heroku = {
   dockerHerokuProcessType: core.getInput("docker_heroku_process_type"),
   appdir: core.getInput("appdir"),
   healthcheck: core.getInput("healthcheck"),
-  checkString: core.getInput("checkString"),
+  checkstring: core.getInput("checkstring"),
   procfile: core.getInput("procfile"),
 };
 
@@ -148,7 +148,7 @@ if (heroku.appdir) {
     if (heroku.healthcheck) {
       try {
         const res = await p(heroku.healthcheck);
-        if (heroku.checkString && heroku.checkString !== res.body.toString()) {
+        if (heroku.checkstring && heroku.checkstring !== res.body.toString()) {
           core.setFailed(
             "Health Check Failed. Error deploying Server. Please check your logs on Heroku to try and diagnose the problem"
           );