diff --git a/src/Compiler/Service/BackgroundCompiler.fs b/src/Compiler/Service/BackgroundCompiler.fs
index 1089f5774e8..ade90c9da3f 100644
--- a/src/Compiler/Service/BackgroundCompiler.fs
+++ b/src/Compiler/Service/BackgroundCompiler.fs
@@ -1065,7 +1065,7 @@ type internal BackgroundCompiler
                         tcProj.TcGlobals,
                         options.IsIncompleteTypeCheckEnvironment,
                         Some builder,
-                        options,
+                        Some options,
                         Array.ofList tcDependencyFiles,
                         creationDiags,
                         parseResults.Diagnostics,
@@ -1247,7 +1247,7 @@ type internal BackgroundCompiler
                      tcEnvAtEnd.AccessRights,
                      tcAssemblyExprOpt,
                      Array.ofList tcDependencyFiles,
-                     options)
+                     Some options)
 
                 let results =
                     FSharpCheckProjectResults(
diff --git a/src/Compiler/Service/FSharpCheckerResults.fs b/src/Compiler/Service/FSharpCheckerResults.fs
index 1c7878c6df8..ab561ab6d18 100644
--- a/src/Compiler/Service/FSharpCheckerResults.fs
+++ b/src/Compiler/Service/FSharpCheckerResults.fs
@@ -348,7 +348,7 @@ type internal TypeCheckInfo
         tcAccessRights: AccessorDomain,
         projectFileName: string,
         mainInputFileName: string,
-        projectOptions: FSharpProjectOptions,
+        projectOptions: FSharpProjectOptions option,
         sResolutions: TcResolutions,
         sSymbolUses: TcSymbolUses,
         sFallback: NameResolutionEnv,
@@ -3289,7 +3289,7 @@ module internal ParseAndCheckFile =
                     tcEnvAtEnd.AccessRights,
                     projectFileName,
                     mainInputFileName,
-                    projectOptions,
+                    Some projectOptions,
                     sink.GetResolutions(),
                     sink.GetSymbolUses(),
                     tcEnvAtEnd.NameEnv,
@@ -3302,9 +3302,11 @@ module internal ParseAndCheckFile =
         }
 
 [<Sealed>]
-type FSharpProjectContext(thisCcu: CcuThunk, assemblies: FSharpAssembly list, ad: AccessorDomain, projectOptions: FSharpProjectOptions) =
+type FSharpProjectContext
+    (thisCcu: CcuThunk, assemblies: FSharpAssembly list, ad: AccessorDomain, projectOptions: FSharpProjectOptions option) =
 
-    member _.ProjectOptions = projectOptions
+    member _.ProjectOptions =
+        projectOptions |> Option.defaultWith (fun () -> failwith "not available")
 
     member _.GetReferencedAssemblies() = assemblies
 
@@ -3713,7 +3715,7 @@ type FSharpCheckProjectResults
             AccessorDomain *
             CheckedImplFile list option *
             string[] *
-            FSharpProjectOptions) option
+            FSharpProjectOptions option) option
     ) =
 
     let getDetails () =
@@ -4009,7 +4011,7 @@ type FsiInteractiveChecker(legacyReferenceResolver, tcConfig: TcConfig, tcGlobal
                  tcState.TcEnvFromImpls.AccessRights,
                  None,
                  dependencyFiles,
-                 projectOptions)
+                 Some projectOptions)
 
             let projectResults =
                 FSharpCheckProjectResults(fileName, Some tcConfig, keepAssemblyContents, errors, Some details)
diff --git a/src/Compiler/Service/FSharpCheckerResults.fsi b/src/Compiler/Service/FSharpCheckerResults.fsi
index 6b0a7f49135..607232f3c92 100644
--- a/src/Compiler/Service/FSharpCheckerResults.fsi
+++ b/src/Compiler/Service/FSharpCheckerResults.fsi
@@ -454,7 +454,7 @@ type public FSharpCheckFileResults =
         tcGlobals: TcGlobals *
         isIncompleteTypeCheckEnvironment: bool *
         builder: IncrementalBuilder option *
-        projectOptions: FSharpProjectOptions *
+        projectOptions: FSharpProjectOptions option *
         dependencyFiles: string[] *
         creationErrors: FSharpDiagnostic[] *
         parseErrors: FSharpDiagnostic[] *
@@ -554,7 +554,7 @@ type public FSharpCheckProjectResults =
             AccessorDomain *
             CheckedImplFile list option *
             string[] *
-            FSharpProjectOptions) option ->
+            FSharpProjectOptions option) option ->
             FSharpCheckProjectResults
 
 module internal ParseAndCheckFile =
diff --git a/src/Compiler/Service/TransparentCompiler.fs b/src/Compiler/Service/TransparentCompiler.fs
index bc15b6c3b67..db91fea3ea3 100644
--- a/src/Compiler/Service/TransparentCompiler.fs
+++ b/src/Compiler/Service/TransparentCompiler.fs
@@ -1695,7 +1695,7 @@ type internal TransparentCompiler
                             bootstrapInfo.TcGlobals,
                             projectSnapshot.IsIncompleteTypeCheckEnvironment,
                             None,
-                            projectSnapshot.ToOptions(),
+                            None,
                             Array.ofList tcInfo.tcDependencyFiles,
                             creationDiags,
                             parseResults.Diagnostics,
@@ -1962,7 +1962,7 @@ type internal TransparentCompiler
                          tcEnvAtEnd.AccessRights,
                          Some checkedImplFiles,
                          Array.ofList tcDependencyFiles,
-                         projectSnapshot.ToOptions())
+                         None)
 
                     let results =
                         FSharpCheckProjectResults(