diff --git a/src/settings/components/form/BlacklistForm.jsx b/src/settings/components/form/BlacklistForm.jsx
index 13571f1..7dad9ee 100644
--- a/src/settings/components/form/BlacklistForm.jsx
+++ b/src/settings/components/form/BlacklistForm.jsx
@@ -2,6 +2,7 @@ import './BlacklistForm.scss';
 import AddButton from '../ui/AddButton';
 import DeleteButton from '../ui/DeleteButton';
 import React from 'react';
+import PropTypes from 'prop-types';
 
 class BlacklistForm extends React.Component {
 
@@ -49,4 +50,9 @@ class BlacklistForm extends React.Component {
   }
 }
 
+BlacklistForm.propTypes = {
+  value: PropTypes.arrayOf(PropTypes.string),
+  onChange: PropTypes.func,
+};
+
 export default BlacklistForm;
diff --git a/src/settings/components/form/KeymapsForm.jsx b/src/settings/components/form/KeymapsForm.jsx
index 25a3710..f5444fc 100644
--- a/src/settings/components/form/KeymapsForm.jsx
+++ b/src/settings/components/form/KeymapsForm.jsx
@@ -1,5 +1,6 @@
 import './KeymapsForm.scss';
 import React from 'react';
+import PropTypes from 'prop-types';
 import Input from '../ui/Input';
 import keymaps from '../../keymaps';
 
@@ -44,4 +45,9 @@ class KeymapsForm extends React.Component {
   }
 }
 
+KeymapsForm.propTypes = {
+  value: PropTypes.objectOf(PropTypes.string),
+  onChange: PropTypes.func,
+};
+
 export default KeymapsForm;
diff --git a/src/settings/components/form/PropertiesForm.jsx b/src/settings/components/form/PropertiesForm.jsx
index 77991fc..9143a7a 100644
--- a/src/settings/components/form/PropertiesForm.jsx
+++ b/src/settings/components/form/PropertiesForm.jsx
@@ -1,5 +1,6 @@
 import './PropertiesForm.scss';
 import React from 'react';
+import PropTypes from 'prop-types';
 
 class PropertiesForm extends React.Component {
 
@@ -57,4 +58,9 @@ class PropertiesForm extends React.Component {
   }
 }
 
+PropertiesForm.propTypes = {
+  value: PropTypes.objectOf(PropTypes.any),
+  onChange: PropTypes.func,
+};
+
 export default PropertiesForm;
diff --git a/src/settings/components/form/SearchForm.jsx b/src/settings/components/form/SearchForm.jsx
index f52fd5f..718cca1 100644
--- a/src/settings/components/form/SearchForm.jsx
+++ b/src/settings/components/form/SearchForm.jsx
@@ -1,5 +1,6 @@
 import './SearchForm.scss';
 import React from 'react';
+import PropTypes from 'prop-types';
 import AddButton from '../ui/AddButton';
 import DeleteButton from '../ui/DeleteButton';
 
@@ -75,4 +76,13 @@ class SearchForm extends React.Component {
   }
 }
 
+SearchForm.propTypes = {
+  value: PropTypes.shape({
+    default: PropTypes.string,
+    engines: PropTypes.arrayOf(PropTypes.arrayOf(PropTypes.string)),
+  }),
+  onChange: PropTypes.func,
+
+};
+
 export default SearchForm;
diff --git a/src/settings/components/ui/Input.jsx b/src/settings/components/ui/Input.jsx
index d090f5b..13a246b 100644
--- a/src/settings/components/ui/Input.jsx
+++ b/src/settings/components/ui/Input.jsx
@@ -1,4 +1,5 @@
 import React from 'react';
+import PropTypes from 'prop-types';
 import './Input.scss';
 
 class Input extends React.Component {
@@ -49,4 +50,11 @@ class Input extends React.Component {
   }
 }
 
+Input.propTypes = {
+  type: PropTypes.string,
+  error: PropTypes.string,
+  label: PropTypes.string,
+  value: PropTypes.string,
+};
+
 export default Input;