diff --git a/src/Paket.Core/PackageMetaData.fs b/src/Paket.Core/PackageMetaData.fs
index ef9b78ca8c..025ec477c4 100644
--- a/src/Paket.Core/PackageMetaData.fs
+++ b/src/Paket.Core/PackageMetaData.fs
@@ -243,32 +243,26 @@ let findDependencies (dependenciesFile : DependenciesFile) config platform (temp
 
          yield! getPackages project]
     
-    //System.Diagnostics.Debugger.Launch() |> ignore
+    // filter out any references that are transient
+    let distinctRefs = allReferences |> List.distinct
+    let refs = 
+        distinctRefs
+        |> List.filter (fun (group, settings: Paket.PackageInstallSettings) ->
+            let isDependencyOfAnyOtherDependency packageName =
+                distinctRefs 
+                |> List.exists (fun (group, settings2) -> 
+                    settings2.Name <> packageName && 
+                        match group with
+                        | Some groupName ->
+                            match lockFile.GetAllDependenciesOfSafe(groupName, settings2.Name) with
+                            | Some packages -> packages.Contains packageName
+                            | _ -> false
+                        | None -> false)
 
-    // filter out any references that are transient to the 
-    let distinctRefs =  allReferences 
-                       |> Seq.distinct
-    let refs = distinctRefs
-               |> Seq.filter (fun (group, settings: Paket.PackageInstallSettings) ->
-                    let isDependencyOfAnyOtherDependency(packageName) =
-                        distinctRefs 
-                        |> Seq.exists (fun (group, settings2) -> 
-                            let result = (settings2.Name <> packageName) && 
-                                            match group with
-                                            | Some groupName ->
-                                                let pdeps = lockFile.GetAllDependenciesOfSafe(groupName, settings2.Name)
-                                                let result2 = pdeps.IsSome && pdeps.Value.Contains(packageName)
-                                                result2
-                                            | None -> false
-                            result)
-
-                    match group with
-                    | None -> true
-                    | Some groupName ->
-                        isDependencyOfAnyOtherDependency(settings.Name) |> not
-                )
-               |> Seq.sortByDescending (fun (group, settings) -> settings.Name)
-               |> Seq.toList
+            match group with
+            | None -> true
+            | Some groupName -> isDependencyOfAnyOtherDependency settings.Name |> not)
+        |> List.sortByDescending (fun (group, settings) -> settings.Name)
 
     match refs with
     | [] -> withDepsAndIncluded