diff --git a/test/powershell/Get-Content.Tests.ps1 b/test/powershell/Get-Content.Tests.ps1
index 29e38fa25..abcb0d089 100644
--- a/test/powershell/Get-Content.Tests.ps1
+++ b/test/powershell/Get-Content.Tests.ps1
@@ -18,6 +18,11 @@
         New-Item -Path $testPath2 -ItemType file -Force -Value $testString2
     }
 
+    AfterEach {
+        Remove-Item -Path $testPath -Force
+        Remove-Item -Path $testPath2 -Force
+    }
+
     It "Should throw an error on a directory  " {
         # also tests that -erroraction SilentlyContinue will work.
         Get-Content . -ErrorAction SilentlyContinue | Should Throw
diff --git a/test/powershell/Get-ItemProperty.Tests.ps1 b/test/powershell/Get-ItemProperty.Tests.ps1
index 67592ef02..f991ef1f0 100644
--- a/test/powershell/Get-ItemProperty.Tests.ps1
+++ b/test/powershell/Get-ItemProperty.Tests.ps1
@@ -17,7 +17,7 @@ Describe "Get-ItemProperty" {
     }
 
     New-Item $tempDirectory -ItemType Directory -Force
-    $testfile = $tempDirectory + [Environment]::DirectorySeparatorChar + "testfile1"
+    $testfile = $tempDirectory + [System.IO.Path]::DirectorySeparatorChar + "testfile1"
 
     New-Item $testfile -ItemType file -Force
 
@@ -62,4 +62,6 @@ Describe "Get-ItemProperty" {
         $alias.PSDrive         | Should Be $cmdlet.PSDrive
         $alias.PSProvider.Name | Should Be $cmdlet.PSProvider.Name
     }
+
+    Remove-Item $tempDirectory -Recurse -Force
 }
diff --git a/test/powershell/Select-String.Tests.ps1 b/test/powershell/Select-String.Tests.ps1
index 7f4375e79..b6f5b9cc6 100644
--- a/test/powershell/Select-String.Tests.ps1
+++ b/test/powershell/Select-String.Tests.ps1
@@ -104,6 +104,10 @@
             New-Item $testInputFile -Itemtype "file" -Force -Value "This is a text string, and another string${nl}This is the second line${nl}This is the third line${nl}This is the fourth line${nl}No matches"
         }
 
+        AfterEach {
+            Remove-Item $testInputFile -Force
+        }
+
         It "Should return an object when a match is found is the file on only one line" {
             (Select-String $testInputFile -Pattern "string").GetType().BaseType | Should be System.Object
         }
diff --git a/test/powershell/Start-Process.Tests.ps1 b/test/powershell/Start-Process.Tests.ps1
index 53bcffa0e..702211dc9 100644
--- a/test/powershell/Start-Process.Tests.ps1
+++ b/test/powershell/Start-Process.Tests.ps1
@@ -71,4 +71,6 @@ Describe "Start-Process" {
         $dirEntry = dir $tempFile
 	$dirEntry.Length | Should BeGreaterThan 0
     }
+
+    Remove-Item -Path $tempFile -Force
 }