diff --git a/postcss.config.js b/postcss.config.js
index f053ebf7..0ff35571 100644
--- a/postcss.config.js
+++ b/postcss.config.js
@@ -1 +1,5 @@
-module.exports = {};
+module.exports = {
+  plugins: [
+    require("autoprefixer")
+  ]
+}
\ No newline at end of file
diff --git a/src/core/components/parameter-row.jsx b/src/core/components/parameter-row.jsx
index 8db1f29a..7db5e4ee 100644
--- a/src/core/components/parameter-row.jsx
+++ b/src/core/components/parameter-row.jsx
@@ -94,7 +94,7 @@ export default class ParameterRow extends Component {
             { param.get("name") }
             { !required ? null : <span style={{color: "red"}}>&nbsp;*</span> }
           </div>
-          <div className="parаmeter__type">{ param.get("type") } { itemType && `[${itemType}]` }</div>
+          <div className="parameter__type">{ param.get("type") } { itemType && `[${itemType}]` }</div>
           <div className="parameter__in">({ param.get("in") })</div>
         </td>
 
diff --git a/src/core/utils.js b/src/core/utils.js
index 63d6f55a..eb6e0a0e 100644
--- a/src/core/utils.js
+++ b/src/core/utils.js
@@ -462,6 +462,12 @@ export const validateInteger = ( val ) => {
   }
 }
 
+export const validateFile = ( val ) => {
+  if ( val && !(val instanceof win.File) ) {
+    return "Value must be a file"
+  }
+}
+
 // validation of parameters before execute
 export const validateParam = (param, isXml) => {
   let errors = []
@@ -472,7 +478,9 @@ export const validateParam = (param, isXml) => {
   let stringCheck = type === "string" && !value
   let arrayCheck = type === "array" && Array.isArray(value) && !value.length
   let listCheck = type === "array" && Im.List.isList(value) && !value.count()
-  if ( required && (stringCheck || arrayCheck || listCheck) ) {
+  let fileCheck = type === "file" && !(value instanceof win.File)
+
+  if ( required && (stringCheck || arrayCheck || listCheck || fileCheck) ) {
     errors.push("Required field is not provided")
     return errors
   }
@@ -505,7 +513,10 @@ export const validateParam = (param, isXml) => {
         errors.push({ index: index, error: err})
       }
     })
-
+  } else if ( type === "file" ) {
+    let err = validateFile(value)
+    if (!err) return errors
+    errors.push(err)
   }
 
   return errors
diff --git a/src/style/_form.scss b/src/style/_form.scss
index f8ba8536..185b836e 100644
--- a/src/style/_form.scss
+++ b/src/style/_form.scss
@@ -42,7 +42,8 @@ label
 input[type=text],
 input[type=password],
 input[type=search],
-input[type=email]
+input[type=email],
+input[type=file]
 {
     min-width: 100px;
     margin: 5px 0;
diff --git a/src/style/_layout.scss b/src/style/_layout.scss
index 572bc5fd..955e4d54 100644
--- a/src/style/_layout.scss
+++ b/src/style/_layout.scss
@@ -113,7 +113,7 @@ body
     }
 }
 
-.parаmeter__type
+.parameter__type
 {
     font-size: 12px;
 
diff --git a/test/core/utils.js b/test/core/utils.js
index baf7dbf7..0ac63e9d 100644
--- a/test/core/utils.js
+++ b/test/core/utils.js
@@ -1,7 +1,8 @@
 /* eslint-env mocha */
 import expect from "expect"
 import { fromJS } from "immutable"
-import { mapToList, validateNumber, validateInteger, validateParam } from "core/utils"
+import { mapToList, validateNumber, validateInteger, validateParam, validateFile } from "core/utils"
+import win from "core/window"
 
 describe("utils", function(){
 
@@ -157,6 +158,19 @@ describe("utils", function(){
     })
   })
 
+   describe("validateFile", function() {
+    let errorMessage = "Value must be a file"
+
+    it("validates against objects which are instances of 'File'", function() {
+      let fileObj = new win.File([], "Test File")
+      expect(validateFile(fileObj)).toBeFalsy()
+      expect(validateFile(null)).toBeFalsy()
+      expect(validateFile(undefined)).toBeFalsy()
+      expect(validateFile(1)).toEqual(errorMessage)
+      expect(validateFile("string")).toEqual(errorMessage)
+    })
+   })
+
   describe("validateParam", function() {
     let param = null
     let result = null
@@ -171,6 +185,16 @@ describe("utils", function(){
       expect( result ).toEqual( ["Required field is not provided"] )
     })
 
+    it("validates required files", function() {
+      param = fromJS({
+        required: true,
+        type: "file",
+        value: undefined
+      })
+      result = validateParam( param, false )
+      expect( result ).toEqual( ["Required field is not provided"] )
+    })
+
     it("validates required arrays", function() {
       param = fromJS({
         required: true,