diff --git a/lcl/interfaces/carbon/carbonwsdialogs.pp b/lcl/interfaces/carbon/carbonwsdialogs.pp
index a857d1e195..e1f46d8e36 100644
--- a/lcl/interfaces/carbon/carbonwsdialogs.pp
+++ b/lcl/interfaces/carbon/carbonwsdialogs.pp
@@ -35,7 +35,7 @@ uses
 ////////////////////////////////////////////////////
 //  Dialogs,
 ////////////////////////////////////////////////////
-  WSDialogs, WSLCLClasses;
+  LCLType, WSDialogs, WSLCLClasses;
 
 type
 
@@ -123,4 +123,4 @@ initialization
 //  RegisterWSComponent(TColorButton, TCarbonWSColorButton);
 //  RegisterWSComponent(TFontDialog, TCarbonWSFontDialog);
 ////////////////////////////////////////////////////
-end.
\ No newline at end of file
+end.
diff --git a/lcl/interfaces/fpgui/fpguiwsdialogs.pp b/lcl/interfaces/fpgui/fpguiwsdialogs.pp
index c043afcfbf..4107b2dd27 100644
--- a/lcl/interfaces/fpgui/fpguiwsdialogs.pp
+++ b/lcl/interfaces/fpgui/fpguiwsdialogs.pp
@@ -35,7 +35,7 @@ uses
 ////////////////////////////////////////////////////
 //  Dialogs,
 ////////////////////////////////////////////////////
-  WSDialogs, WSLCLClasses;
+  LCLType, WSDialogs, WSLCLClasses;
 
 type
 
diff --git a/lcl/interfaces/gnome/gnomewsdialogs.pp b/lcl/interfaces/gnome/gnomewsdialogs.pp
index 2e7b6d8023..cc11e3c59a 100644
--- a/lcl/interfaces/gnome/gnomewsdialogs.pp
+++ b/lcl/interfaces/gnome/gnomewsdialogs.pp
@@ -35,7 +35,7 @@ uses
 ////////////////////////////////////////////////////
 //  Dialogs,
 ////////////////////////////////////////////////////
-  WSDialogs, WSLCLClasses;
+  LCLType, WSDialogs, WSLCLClasses;
 
 type
 
@@ -123,4 +123,4 @@ initialization
 //  RegisterWSComponent(TColorButton, TGnomeWSColorButton);
 //  RegisterWSComponent(TFontDialog, TGnomeWSFontDialog);
 ////////////////////////////////////////////////////
-end.
\ No newline at end of file
+end.
diff --git a/lcl/interfaces/gtk/gtkwsdialogs.pp b/lcl/interfaces/gtk/gtkwsdialogs.pp
index 8d61c7ff4c..c5e8be24b3 100644
--- a/lcl/interfaces/gtk/gtkwsdialogs.pp
+++ b/lcl/interfaces/gtk/gtkwsdialogs.pp
@@ -29,7 +29,7 @@ interface
 uses
   {$IFDEF GTK2} Gtk2, Glib2, gdk2, {$ELSE} Gtk, gdk, Glib, {$ENDIF}
   SysUtils, Classes, Controls, LMessages, InterfaceBase, graphics,
-  Dialogs, WSDialogs, WSLCLClasses, gtkint, gtkproc, gtkwscontrols;
+  LCLType, Dialogs, WSDialogs, WSLCLClasses, gtkint, gtkproc, gtkwscontrols;
 
 type
 
diff --git a/lcl/interfaces/gtk2/gtk2wsdialogs.pp b/lcl/interfaces/gtk2/gtk2wsdialogs.pp
index 7659ed67bf..b6f1cdb3bc 100644
--- a/lcl/interfaces/gtk2/gtk2wsdialogs.pp
+++ b/lcl/interfaces/gtk2/gtk2wsdialogs.pp
@@ -35,7 +35,7 @@ uses
 ////////////////////////////////////////////////////
 //  Dialogs,
 ////////////////////////////////////////////////////
-  WSDialogs, WSLCLClasses;
+  LCLType, WSDialogs, WSLCLClasses;
 
 type
 
@@ -123,4 +123,4 @@ initialization
 //  RegisterWSComponent(TColorButton, TGtk2WSColorButton);
 //  RegisterWSComponent(TFontDialog, TGtk2WSFontDialog);
 ////////////////////////////////////////////////////
-end.
\ No newline at end of file
+end.
diff --git a/lcl/interfaces/qt/qtwsdialogs.pp b/lcl/interfaces/qt/qtwsdialogs.pp
index f9c8fda3ac..859d067afe 100644
--- a/lcl/interfaces/qt/qtwsdialogs.pp
+++ b/lcl/interfaces/qt/qtwsdialogs.pp
@@ -29,8 +29,8 @@ interface
 uses
   // Libs
   qt4, qtobjects, qtwidgets,
-  // LCL
-  SysUtils, Classes, Dialogs, Controls, Forms,
+  // RTL + LCL
+  SysUtils, Classes, LCLType, Dialogs, Controls, Forms,
   // Widgetset
   WSDialogs, WSLCLClasses;
 
diff --git a/lcl/widgetset/wsdialogs.pp b/lcl/widgetset/wsdialogs.pp
index 57228cfdd1..01c17ca9ea 100644
--- a/lcl/widgetset/wsdialogs.pp
+++ b/lcl/widgetset/wsdialogs.pp
@@ -44,7 +44,7 @@ uses
 // To get as little as posible circles,
 // uncomment only when needed for registration
 ////////////////////////////////////////////////////
-  Dialogs,
+  LCLType, Dialogs,
 ////////////////////////////////////////////////////
   WSLCLClasses, WSControls;