diff --git a/src/gui/widgets/helper.cpp b/src/gui/widgets/helper.cpp
index 5426790fa96..f2357532de4 100644
--- a/src/gui/widgets/helper.cpp
+++ b/src/gui/widgets/helper.cpp
@@ -137,16 +137,6 @@ t_string missing_widget(const std::string& id)
 	return t_string(vgettext("Mandatory widget '$id' hasn't been defined.", symbols));
 }
 
-std::string get_uid()
-{
-	static unsigned id = 0;
-	++id;
-	assert(id); // avoid wrapping.
-
-	return "____" + lexical_cast<std::string>(id);
-
-}
-
 void get_screen_size_variables(game_logic::map_formula_callable& variable)
 {
 	variable.add("screen_width", variant(settings::screen_width));
diff --git a/src/gui/widgets/helper.hpp b/src/gui/widgets/helper.hpp
index d15a97477c2..a95553e7f86 100644
--- a/src/gui/widgets/helper.hpp
+++ b/src/gui/widgets/helper.hpp
@@ -136,16 +136,6 @@ unsigned decode_font_style(const std::string& style);
  */
 t_string missing_widget(const std::string& id);
 
-/**
- * Gets an unique id for a widget.
- *
- * The id will have extra leading underscores so it's in the private range and
- * can't collide with user defined ids.
- *
- * @returns                       The id.
- */
-std::string get_uid();
-
 /**
  * Gets a formula object with the screen size.
  *