diff --git a/ide/buildlazdialog.pas b/ide/buildlazdialog.pas
index 438f53f346..158e0e1f14 100644
--- a/ide/buildlazdialog.pas
+++ b/ide/buildlazdialog.pas
@@ -153,7 +153,7 @@ type
 function ShowConfigureBuildLazarusDlg(AProfiles: TBuildLazarusProfiles): TModalResult;
 
 function BuildLazarus(Profiles: TBuildLazarusProfiles;
-  ExternalTools: TExternalToolList; Macros: TTransferMacroList;
+  ExternalTools: TBaseExternalToolList; Macros: TTransferMacroList;
   const PackageOptions, CompilerPath, MakePath: string;
   Flags: TBuildLazarusFlags): TModalResult;
 
@@ -212,7 +212,7 @@ begin
 end;
 
 function BuildLazarus(Profiles: TBuildLazarusProfiles;
-  ExternalTools: TExternalToolList; Macros: TTransferMacroList;
+  ExternalTools: TBaseExternalToolList; Macros: TTransferMacroList;
   const PackageOptions, CompilerPath, MakePath: string;
   Flags: TBuildLazarusFlags): TModalResult;
 
diff --git a/ide/lazbuild.lpr b/ide/lazbuild.lpr
index 74fdded456..a73970e59b 100644
--- a/ide/lazbuild.lpr
+++ b/ide/lazbuild.lpr
@@ -34,6 +34,7 @@ uses
   // IDE
   IDEProcs, InitialSetupDlgs, OutputFilter, CompilerOptions, ApplicationBundle,
   TransferMacros, EnvironmentOpts, IDETranslations, LazarusIDEStrConsts,
+  ExtToolDialog,
   MiscOptions, Project, LazConf, PackageDefs, PackageLinks, PackageSystem,
   BuildLazDialog, BuildProfileManager, BuildManager, BaseBuildManager;
   
@@ -807,8 +808,8 @@ begin
     end;
     TranslateResourceStrings(EnvironmentOptions.LazarusDirectory,
                              EnvironmentOptions.LanguageID);
-    ExternalTools.OnNeedsOutputFilter:=@OnExtToolNeedsOutputFilter;
-    ExternalTools.OnFreeOutputFilter:=@OnExtToolFreeOutputFilter;
+    TExternalToolList(ExternalTools).OnNeedsOutputFilter:=@OnExtToolNeedsOutputFilter;
+    TExternalToolList(ExternalTools).OnFreeOutputFilter:=@OnExtToolFreeOutputFilter;
     if CompilerOverride<>'' then
       CompilerFilename:=CompilerOverride;
     if LazarusDirOverride<>'' then
diff --git a/ide/outputfilter.pas b/ide/outputfilter.pas
index 3c5565a1bc..5febb7411c 100644
--- a/ide/outputfilter.pas
+++ b/ide/outputfilter.pas
@@ -29,7 +29,7 @@ interface
 
 uses
   Classes, Math, SysUtils, Forms, Controls, Dialogs, CompilerOptions,
-  Process, AsyncProcess, LCLProc, DynQueue, FileUtil, UTF8Process,
+  AsyncProcess, LCLProc, DynQueue, FileUtil, UTF8Process,
   CodeCache, CodeToolManager,
   IDEDialogs, IDEMsgIntf, IDEExternToolIntf,
   IDEProcs, LazConf;