diff --git a/fcs/samples/EditorService/Program.fs b/fcs/samples/EditorService/Program.fs
index e3ab70185c37ae0c3d67dc20eb66f23475a13551..d457bf17c91998a338f44a2889a40ec0aed7c6a3 100644
--- a/fcs/samples/EditorService/Program.fs
+++ b/fcs/samples/EditorService/Program.fs
@@ -1,6 +1,4 @@
 // Open the namespace with InteractiveChecker type
-open System
-open FSharp.Compiler
 open FSharp.Compiler.SourceCodeServices
 open FSharp.Compiler.QuickParse
 
diff --git a/fcs/samples/FscExe/FscMain.fs b/fcs/samples/FscExe/FscMain.fs
index 26f26be63d10639117e66d24cc3fed6b11ec7d55..da272800d659c41d1fb07149f97f7eb1990d9bca 100644
--- a/fcs/samples/FscExe/FscMain.fs
+++ b/fcs/samples/FscExe/FscMain.fs
@@ -7,12 +7,10 @@ open System.Diagnostics
 open System.IO
 open System.Reflection
 open System.Runtime.CompilerServices
-open FSharp.Compiler
 open FSharp.Compiler.SourceCodeServices
 open FSharp.Compiler.AbstractIL.IL // runningOnMono 
 open FSharp.Compiler.AbstractIL.Internal.Library
 open FSharp.Compiler.ErrorLogger
-open FSharp.Compiler.Range
 
 #if RESIDENT_COMPILER
 type TypeInThisAssembly() = member x.Dummy = 1
diff --git a/fcs/samples/FsiExe/fsimain.fs b/fcs/samples/FsiExe/fsimain.fs
index c59ef2fe50fb418f6aa3c117aafdde9f165bc490..5fb34c3af17e8c39cc6acad26480ad6183e49985 100644
--- a/fcs/samples/FsiExe/fsimain.fs
+++ b/fcs/samples/FsiExe/fsimain.fs
@@ -17,13 +17,11 @@ module internal Sample.FSharp.Compiler.Interactive.Main
 
 open System
 open System.Globalization
-open System.IO
 open System.Reflection
 open System.Threading
 open System.Windows.Forms
 
 open FSharp.Compiler.Interactive.Shell
-open FSharp.Compiler.Interactive
 open FSharp.Compiler
 
 #nowarn "55"
diff --git a/fcs/samples/UntypedTree/Program.fs b/fcs/samples/UntypedTree/Program.fs
index ba6afb2dd2b0ab34a21280a8a903b1d5d32e14f4..9d99b8199f8a11affb2955dccdade1ef1132a864 100644
--- a/fcs/samples/UntypedTree/Program.fs
+++ b/fcs/samples/UntypedTree/Program.fs
@@ -1,5 +1,4 @@
 // Open the namespace with InteractiveChecker type
-open System
 open FSharp.Compiler.SourceCodeServices