diff --git a/vsintegration/src/FSharp.Editor/Debugging/LanguageDebugInfoService.fs b/vsintegration/src/FSharp.Editor/Debugging/LanguageDebugInfoService.fs
index 8d76245ab72..d7df53e263b 100644
--- a/vsintegration/src/FSharp.Editor/Debugging/LanguageDebugInfoService.fs
+++ b/vsintegration/src/FSharp.Editor/Debugging/LanguageDebugInfoService.fs
@@ -10,7 +10,6 @@ open System.Threading.Tasks
 
 open Microsoft.CodeAnalysis
 open Microsoft.CodeAnalysis.Classification
-open Microsoft.CodeAnalysis.Editor.Implementation.Debugging
 open Microsoft.CodeAnalysis.Host.Mef
 open Microsoft.CodeAnalysis.Text
 open Microsoft.CodeAnalysis.ExternalAccess.FSharp.Editor.Implementation.Debugging