diff --git a/README.md b/README.md
index d07e1f8..09ab67b 100644
--- a/README.md
+++ b/README.md
@@ -288,12 +288,12 @@ Grid method is originally called Old reCAPTCHA V2 method. The method can be used
 ```ruby
 result = client.grid({
   image: 'path/to/captcha.jpg',
-  rows: 3,
-  cols: 3,
+  recaptcharows: 3,
+  recaptchacols: 3,
   previous_id: 0,
   lang: 'en',
-  hint_image: 'path/to/hint.jpg',
-  hint_text: 'Select all images with an Orange'
+  imginstructions: 'path/to/hint.jpg',
+  textinstructions: 'Select all images with an Orange'
 })
 ```
 
diff --git a/README.ru.md b/README.ru.md
index 4041eaf..2f512f2 100644
--- a/README.ru.md
+++ b/README.ru.md
@@ -270,12 +270,12 @@ result = client.capy({
 ```ruby
 result = client.grid({
   image: 'path/to/captcha.jpg',
-  rows: 3,
-  cols: 3,
+  recaptcharows: 3,
+  recaptchacols: 3,
   previous_id: 0,
   lang: 'en',
-  hint_image: 'path/to/hint.jpg',
-  hint_text: 'Select all images with an Orange'
+  imginstructions: 'path/to/hint.jpg',
+  textinstructions: 'Select all images with an Orange'
 })
 ```
 
diff --git a/lib/api_2captcha/client.rb b/lib/api_2captcha/client.rb
index 42d4825..8228c2e 100644
--- a/lib/api_2captcha/client.rb
+++ b/lib/api_2captcha/client.rb
@@ -134,7 +134,7 @@ def capy(params)
     end
 
     def grid(params)
-      params["recaptcha"] = 1
+      params[:recaptcha] = 1
       solve("post", **params)
     end