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-rw-r--r--src/engine_gui.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/engine_gui.h b/src/engine_gui.h
index fc0b7ad7d..e95cc13e4 100644
--- a/src/engine_gui.h
+++ b/src/engine_gui.h
@@ -19,7 +19,7 @@
typedef GUIList<EngineID, CargoID> GUIEngineList;
-typedef int CDECL EngList_SortTypeFunction(const EngineID*, const EngineID*); ///< argument type for #EngList_Sort.
+typedef bool EngList_SortTypeFunction(const EngineID&, const EngineID&); ///< argument type for #EngList_Sort.
void EngList_Sort(GUIEngineList *el, EngList_SortTypeFunction compare);
void EngList_SortPartial(GUIEngineList *el, EngList_SortTypeFunction compare, uint begin, uint num_items);