diff --git a/CHANGELOG.md b/CHANGELOG.md
index 28b913221..a43191190 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -44,6 +44,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - When the SqlSetup detects that the expected components was not installed
     and consequently throws an exception, that exception message now presents
     a link to an article on how to find the SQL Server setup logs ([issue #1420](https://github.com/dsccommunity/SqlServerDsc/issues/1420)).
+- SqlRSSetup
+  - If parameter `EditionUpgrade` is set to `$false` the `/EditionUpgrade`
+    argument is no longer wrongly added ([issue #1398](https://github.com/dsccommunity/SqlServerDsc/issues/1398)).
 - SqlServerDsc.Common
   - Updated `Get-ServerProtocolObject`, helper function to ensure an exception is
     thrown if the specified instance cannot be obtained ([issue #1628](https://github.com/dsccommunity/SqlServerDsc/issues/1628)).
diff --git a/source/DSCResources/DSC_SqlRSSetup/DSC_SqlRSSetup.psm1 b/source/DSCResources/DSC_SqlRSSetup/DSC_SqlRSSetup.psm1
index b00e013c8..3fa01b354 100644
--- a/source/DSCResources/DSC_SqlRSSetup/DSC_SqlRSSetup.psm1
+++ b/source/DSCResources/DSC_SqlRSSetup/DSC_SqlRSSetup.psm1
@@ -404,8 +404,11 @@ function Set-TargetResource
 
         'EditionUpgrade'
         {
-            $setupArguments += @{
-                'EditionUpgrade' = [System.Management.Automation.SwitchParameter] $true
+            if ($EditionUpgrade -eq $true)
+            {
+                $setupArguments += @{
+                    'EditionUpgrade' = [System.Management.Automation.SwitchParameter] $true
+                }
             }
         }
 
diff --git a/tests/Unit/DSC_SqlRSSetup.Tests.ps1 b/tests/Unit/DSC_SqlRSSetup.Tests.ps1
index 3b9c0fd15..29eeb5c82 100644
--- a/tests/Unit/DSC_SqlRSSetup.Tests.ps1
+++ b/tests/Unit/DSC_SqlRSSetup.Tests.ps1
@@ -652,6 +652,33 @@ try
                     }
                 }
 
+                Context 'When Reporting Services are installed with parameters EditionUpgrade set to $false' {
+                    BeforeEach {
+                        $mockSetTargetResourceParameters['ProductKey'] = $mockProductKey
+                        $mockSetTargetResourceParameters['EditionUpgrade'] = $false
+
+                        $mockStartSqlSetupProcess_ExpectedArgumentList = @{
+                            Quiet = [System.Management.Automation.SwitchParameter] $true
+                            IAcceptLicenseTerms = [System.Management.Automation.SwitchParameter] $true
+                            PID = $mockProductKey
+                        }
+
+                        Mock -CommandName Start-SqlSetupProcess -MockWith {
+                            Test-SetupArgument -Argument $ArgumentList -ExpectedArgument $mockStartSqlSetupProcess_ExpectedArgumentList
+
+                            return 0
+                        }
+                    }
+
+                    It 'Should call the correct mocks' {
+                        { Set-TargetResource @mockSetTargetResourceParameters } | Should -Not -Throw
+
+                        Assert-MockCalled -CommandName Start-SqlSetupProcess -ParameterFilter {
+                            $FilePath -eq $mockSetTargetResourceParameters.SourcePath
+                        } -Exactly -Times 1 -Scope 'It'
+                    }
+                }
+
                 Context 'When Reporting Services are installed using parameter SourceCredential' {
                     BeforeAll {
                         $mockLocalPath = 'C:\LocalPath'