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-rw-r--r--src/airport_gui.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/airport_gui.cpp b/src/airport_gui.cpp
index 9a4b34304..0317af93f 100644
--- a/src/airport_gui.cpp
+++ b/src/airport_gui.cpp
@@ -174,7 +174,7 @@ static void BuildAirportPickerWndProc(Window *w, WindowEvent *e)
airport = GetAirport(_selected_airport_type);
SetTileSelectSize(airport->size_x, airport->size_y);
- uint rad = _patches.modified_catchment ? airport->catchment : 4;
+ int rad = _patches.modified_catchment ? airport->catchment : 4;
if (_station_show_coverage) SetTileSelectBigSize(-rad, -rad, 2 * rad, 2 * rad);