diff --git a/src/gui/dialogs/dialog.cpp b/src/gui/dialogs/dialog.cpp
index 27127ec6d95..fe003c233a4 100644
--- a/src/gui/dialogs/dialog.cpp
+++ b/src/gui/dialogs/dialog.cpp
@@ -16,6 +16,7 @@
 
 #include "foreach.hpp"
 #include "gui/dialogs/field.hpp"
+#include "gui/widgets/integer_selector.hpp"
 
 namespace gui2 {
 
diff --git a/src/gui/dialogs/mp_create_game.cpp b/src/gui/dialogs/mp_create_game.cpp
index 92e61f86d09..3a1afcf0488 100644
--- a/src/gui/dialogs/mp_create_game.cpp
+++ b/src/gui/dialogs/mp_create_game.cpp
@@ -19,6 +19,7 @@
 #include "gettext.hpp"
 #include "gui/dialogs/field.hpp"
 #include "gui/dialogs/helper.hpp"
+#include "gui/widgets/integer_selector.hpp"
 #include "gui/widgets/listbox.hpp"
 #include "gui/widgets/minimap.hpp"
 #include "../../settings.hpp"
diff --git a/src/gui/widgets/integer_selector.hpp b/src/gui/widgets/integer_selector.hpp
new file mode 100644
index 00000000000..c05e46db33e
--- /dev/null
+++ b/src/gui/widgets/integer_selector.hpp
@@ -0,0 +1,52 @@
+/* $Id$ */
+/*
+   copyright (C) 2007 - 2008 by mark de wever <koraq@xs4all.nl>
+   part of the battle for wesnoth project http://www.wesnoth.org/
+
+   this program is free software; you can redistribute it and/or modify
+   it under the terms of the gnu general public license version 2
+   or at your option any later version.
+   this program is distributed in the hope that it will be useful,
+   but without any warranty.
+
+   see the copying file for more details.
+*/
+
+#ifndef GUI_WIDGETS_INTEGER_SELECTOR_HPP_INCLUDED
+#define GUI_WIDGETS_INTEGER_SELECTOR_HPP_INCLUDED
+
+namespace gui2 {
+
+/**
+ * Small abstract helper class.
+ *
+ * Parts of the engine inherit this class so we can have generic
+ * widgets to select an integer value.
+ */
+class tinteger_selector_ 
+{
+public:
+	virtual ~tinteger_selector_() {}
+
+	/** Sets the selected value. */
+	virtual void set_value(const int value) = 0;
+
+	/** Gets the selected value. */
+	virtual int get_value() const = 0;
+
+	/** Sets the minimum value. */
+	virtual void set_minimum_value(const int value) = 0;
+
+	/** Gets the minimum value. */
+	virtual int get_minimum_value() const = 0;
+
+	/** Sets the maximum value. */
+	virtual void set_maximum_value(const int value) = 0;
+
+	/** Gets the maximum value. */
+	virtual int get_maximum_value() const = 0;
+};
+
+} // namespace gui2
+
+#endif
diff --git a/src/gui/widgets/slider.hpp b/src/gui/widgets/slider.hpp
index 691f58846d3..9d65b526205 100644
--- a/src/gui/widgets/slider.hpp
+++ b/src/gui/widgets/slider.hpp
@@ -15,6 +15,7 @@
 #ifndef GUI_WIDGETS_SLIDER_HPP_INCLUDED
 #define GUI_WIDGETS_SLIDER_HPP_INCLUDED
 
+#include "gui/widgets/integer_selector.hpp"
 #include "gui/widgets/scrollbar.hpp"
 
 namespace gui2 {
diff --git a/src/gui/widgets/widget.hpp b/src/gui/widgets/widget.hpp
index 8c3c3721c26..52b126fabb4 100644
--- a/src/gui/widgets/widget.hpp
+++ b/src/gui/widgets/widget.hpp
@@ -775,36 +775,6 @@ public:
 	virtual void set_callback_state_change(void (*callback) (twidget*)) = 0;
 };
 
-/**
- * Small abstract helper class.
- *
- * Parts of the engine inherit this class so we can have generic
- * widgets to select an integer value.
- */
-class tinteger_selector_ 
-{
-public:
-	virtual ~tinteger_selector_() {}
-
-	/** Sets the selected value. */
-	virtual void set_value(const int value) = 0;
-
-	/** Gets the selected value. */
-	virtual int get_value() const = 0;
-
-	/** Sets the minimum value. */
-	virtual void set_minimum_value(const int value) = 0;
-
-	/** Gets the minimum value. */
-	virtual int get_minimum_value() const = 0;
-
-	/** Sets the maximum value. */
-	virtual void set_maximum_value(const int value) = 0;
-
-	/** Gets the maximum value. */
-	virtual int get_maximum_value() const = 0;
-};
-
 } // namespace gui2
 
 #endif