diff --git a/functions/core.ps1 b/functions/core.ps1
index e60f92a..0b8faad 100644
--- a/functions/core.ps1
+++ b/functions/core.ps1
@@ -57,7 +57,10 @@ function CallRestUri {
             if ($null -eq $params.TimeoutSec) {
                 $paramInvokeRestMethod.TimeoutSec = 300
             }
-            $result = Invoke-WebRequest @paramInvokeRestMethod @params
+            $result = Invoke-WebRequest @paramInvokeRestMethod @params -UseBasicParsing
+            if ($result.Headers -and $result.Headers['Content-Type'] -like 'application/json;*') {
+                $result = $result.Content | ConvertFrom-Json
+            }
         }
         else {
             $result = Invoke-RestMethod @paramInvokeRestMethod @params
diff --git a/tests/core.tests.ps1 b/tests/core.tests.ps1
index 681be9e..c7d85c0 100644
--- a/tests/core.tests.ps1
+++ b/tests/core.tests.ps1
@@ -3,20 +3,28 @@ Import-Module (Resolve-Path "$PSScriptRoot\..\Qlik-Cli.psd1").Path
 
 Describe 'CallRestUri' {
     InModuleScope Qlik-Cli {
-        Context 'when uploading or downloading files' {
+        Describe 'when uploading or downloading files' {
             BeforeAll {
-                Mock Invoke-WebRequest -Verifiable { }
+                Mock Invoke-WebRequest -Verifiable { return $UseBasicParsing }
                 Mock Invoke-RestMethod { throw 'Invoke-RestMethod should not be used for file transfers' }
                 $script:prefix = 'https://localhost'
                 $script:api_params = @{ }
                 $script:rawOutput = $true
             }
 
-            it 'should use Invoke-WebRequest' {
+            It 'should use Invoke-WebRequest' {
                 CallRestUri GET /qrs/download/scriptlog @{ OutFile = 'TestDrive:\script.log' }
 
                 Assert-VerifiableMock
             }
+
+            It 'should use basic parsing' {
+                $result = CallRestUri GET /qrs/app/upload @{ InFile = 'TestDrive:\app.qvf' }
+
+                $result | Should -BeTrue
+
+                Assert-VerifiableMock
+            }
         }
     }
 }