diff --git a/packages/fpmkunit/src/fpmkunit.pp b/packages/fpmkunit/src/fpmkunit.pp
index 7c37bb8f00..ece48e2a65 100644
--- a/packages/fpmkunit/src/fpmkunit.pp
+++ b/packages/fpmkunit/src/fpmkunit.pp
@@ -1844,17 +1844,6 @@ begin
 end;
 
 
-type
-  TUnsortedDuplicatesStringList = class(TStringList)
-  public
-    function Add(const S: string): Integer; override;
-  end;
-
-  TUnsortedCompilerOptionsStringList = class(TStringList)
-  public
-    constructor Create;
-  end;
-
 var
   CustomFpmakeCommandlineOptions: TStrings;
   CustomFpMakeCommandlineValues: TStrings;
@@ -2938,7 +2927,7 @@ end;
 procedure AddCustomFpmakeCommandlineOption(const ACommandLineOption, HelpMessage : string);
 begin
   if not assigned(CustomFpmakeCommandlineOptions) then
-    CustomFpmakeCommandlineOptions := TUnsortedCompilerOptionsStringList.Create;
+    CustomFpmakeCommandlineOptions := TStringList.Create;
   CustomFpmakeCommandlineOptions.Values[ACommandLineOption]:=HelpMessage;
 end;
 
@@ -3012,7 +3001,7 @@ begin
   Result:=Nil;
   If (S='') then
     Exit;
-  Result:=TUnsortedCompilerOptionsStringList.Create;
+  Result:=TStringList.Create;
   Repeat
     P:=Pos(' ',S);
     If P=0 then
@@ -3602,7 +3591,7 @@ constructor TPackageVariant.Create(ACollection: TCollection);
 begin
   inherited Create(ACollection);
   FTargets := TTargets.Create(TTarget);
-  FOptions := TUnsortedCompilerOptionsStringList.Create;
+  FOptions := TStringList.Create;
   FIncludePath:=TConditionalStrings.Create(TConditionalString);
   FSourcePath:=TConditionalStrings.Create(TConditionalString);
 end;
@@ -3792,32 +3781,6 @@ end;
 
 {$endif NO_THREADING}
 
-{****************************************************************************
-                           TUnsortedDuplicatesStringList
-****************************************************************************}
-
-function TUnsortedDuplicatesStringList.Add(const S: string): Integer;
-
-begin
-  result := IndexOf(S);
-  If result > -1 then
-    Case DUplicates of
-      DupAccept,
-      DupIgnore : Exit;
-      DupError : Error(SDuplicateString,0)
-    end;
-  inherited Add(S);
-end;
-
-{****************************************************************************
-                           TUnsortedCompilerOptionsStringList
-****************************************************************************}
-
-constructor  TUnsortedCompilerOptionsStringList.Create;
-begin
-  Inherited Create;
-  Duplicates:=DupAccept;
-end;
 
 {****************************************************************************
                                 TNamedItem
@@ -4638,14 +4601,14 @@ end;
 function TPackage.GetOptions: TStrings;
 begin
   If (FOptions=Nil) then
-    FOptions:=TUnsortedCompilerOptionsStringList.Create;
+    FOptions:=TStringList.Create;
   Result:=FOptions;
 end;
 
 function TPackage.GetTransmitOptions: TStrings;
 begin
   If (FTransmitOptions=Nil) then
-    FTransmitOptions:=TUnsortedCompilerOptionsStringList.Create;
+    FTransmitOptions:=TStringList.Create;
   Result:=FTransmitOptions;
 end;
 
@@ -4815,7 +4778,7 @@ Var
   T : TTarget;
   S, O, FN : String;
   SL : TStringList;
-  L : TUnsortedDuplicatesStringList;
+  L : TStringList;
   I : Integer;
   iCPU : TCPU;
   iOS : TOS;
@@ -4846,7 +4809,7 @@ begin
         SL.Add('-dUNIX');
       SL.Add('-M'+ModeToString(T.Mode));
       // Include Path
-      L:=TUnsortedDuplicatesStringList.Create;
+      L:=TStringList.Create;
       L.Duplicates:=dupIgnore;
       AddDependencyPaths(L,depInclude,T);
       AddConditionalStrings(P, L,P.IncludePath,Defaults.CompileTarget);
@@ -5403,7 +5366,7 @@ end;
 function TCustomDefaults.GetOptions: TStrings;
 begin
   If (FOptions=Nil) then
-    FOptions:=TUnsortedCompilerOptionsStringList.Create;
+    FOptions:=TStringList.Create;
   Result:=FOptions;
 end;
 
@@ -6375,7 +6338,7 @@ begin
     else if assigned(CustomFpmakeCommandlineOptions) and CheckCustomOption(I,CustOptName) then
       begin
       if not assigned(CustomFpMakeCommandlineValues) then
-        CustomFpMakeCommandlineValues := TUnsortedCompilerOptionsStringList.Create;
+        CustomFpMakeCommandlineValues := TStringList.Create;
       CustomFpMakeCommandlineValues.Values[CustOptName]:=OptionArg(I, true)
       end
     else if (not CheckBuildOptionSetValue(I)) and (not CheckPackageVariantOptionSetValue(I))
@@ -7952,7 +7915,7 @@ procedure TBuildEngine.GetCompilerCommand(Args: TStrings; APackage: TPackage;
   ATarget: TTarget; Env: TStrings);
 
 Var
-  L : TUnsortedDuplicatesStringList;
+  L : TStringList;
   s : string;
   ExtCmd,ErrS: string;
   i : Integer;
@@ -7986,7 +7949,7 @@ begin
     Args.Add('-FE'+AddPathPrefix(APackage,APackage.GetBinOutputDir(Defaults.CompileTarget)));
   Args.Add('-FU'+AddPathPrefix(APackage,APackage.GetUnitsOutputDir(Defaults.CompileTarget)));
   // Object Path
-  L:=TUnsortedDuplicatesStringList.Create;
+  L:=TStringList.Create;
   L.Duplicates:=dupIgnore;
   AddConditionalStrings(APackage, L,APackage.ObjectPath, Defaults.CompileTarget);
   AddConditionalStrings(APackage, L,ATarget.ObjectPath, Defaults.CompileTarget);
@@ -7994,7 +7957,7 @@ begin
     Args.Add('-Fo'+AddPathPrefix(APackage,L[i]));
   FreeAndNil(L);
   // Unit Dirs
-  L:=TUnsortedDuplicatesStringList.Create;
+  L:=TStringList.Create;
   L.Duplicates:=dupIgnore;
   AddDependencyUnitPaths(L,APackage);
   AddDependencyPaths(L,depUnit,ATarget);
@@ -8004,7 +7967,7 @@ begin
     Args.Add('-Fu'+AddPathPrefix(APackage,L[i]));
   FreeAndNil(L);
   // Include Path
-  L:=TUnsortedDuplicatesStringList.Create;
+  L:=TStringList.Create;
   L.Duplicates:=dupIgnore;
   AddDependencyPaths(L,depInclude,ATarget);
   AddConditionalStrings(APackage, L,APackage.IncludePath, Defaults.CompileTarget);
@@ -9387,7 +9350,7 @@ Var
   RemainingList : TStrings;
   i : longint;
 begin
-  List:=TUnsortedDuplicatesStringList.Create;
+  List:=TStringList.Create;
   List.Duplicates:=DupIgnore;
   try
     List.Add(APackage.GetUnitConfigOutputFilename(aTarget));
@@ -9395,7 +9358,7 @@ begin
     if (List.Count>0) then
       begin
       CmdDeleteFiles(List);
-      DirectoryList:=TUnsortedDuplicatesStringList.Create;
+      DirectoryList:=TStringList.Create;
       DirectoryList.Duplicates:=DupIgnore;
       try
         GetDirectoriesFromFilelist(List,DirectoryList);
@@ -10108,7 +10071,7 @@ end;
 function TTarget.GetOptions: TStrings;
 begin
   If Foptions=Nil then
-    FOptions:=TUnsortedCompilerOptionsStringList.Create;
+    FOptions:=TStringList.Create;
   Result:=FOptions;
 end;
 
@@ -11121,7 +11084,7 @@ end;
 function TCommand.GetOptions: TStrings;
 begin
   If (FOptions=Nil) then
-    FOptions:=TUnsortedCompilerOptionsStringList.Create;
+    FOptions:=TStringList.Create;
   Result:=FOptions;
 end;