diff --git a/src/openrct2-ui/windows/Map.cpp b/src/openrct2-ui/windows/Map.cpp
index 246575d69c..b081489442 100644
--- a/src/openrct2-ui/windows/Map.cpp
+++ b/src/openrct2-ui/windows/Map.cpp
@@ -1579,7 +1579,7 @@ static void map_window_set_pixels(rct_window* w)
 
     for (int32_t i = 0; i < MAXIMUM_MAP_SIZE_TECHNICAL; i++)
     {
-        if (x > 0 && y > 0 && x < gMapSizeUnits && y < gMapSizeUnits)
+        if (!map_is_edge({ x, y }))
         {
             switch (w->selected_tab)
             {
diff --git a/src/openrct2/actions/LargeSceneryPlaceAction.cpp b/src/openrct2/actions/LargeSceneryPlaceAction.cpp
index 51fe9f8760..ccc6a13ed5 100644
--- a/src/openrct2/actions/LargeSceneryPlaceAction.cpp
+++ b/src/openrct2/actions/LargeSceneryPlaceAction.cpp
@@ -183,7 +183,7 @@ GameActions::Result::Ptr LargeSceneryPlaceAction::Query() const
 
         res->GroundFlags = tempSceneryGroundFlags;
 
-        if (!LocationValid(curTile) || curTile.x >= gMapSizeUnits || curTile.y >= gMapSizeUnits)
+        if (!LocationValid(curTile) || map_is_edge(curTile))
         {
             return std::make_unique<LargeSceneryPlaceActionResult>(GameActions::Status::Disallowed, STR_OFF_EDGE_OF_MAP);
         }
diff --git a/src/openrct2/actions/PlaceParkEntranceAction.cpp b/src/openrct2/actions/PlaceParkEntranceAction.cpp
index 248353afee..c3153c32a6 100644
--- a/src/openrct2/actions/PlaceParkEntranceAction.cpp
+++ b/src/openrct2/actions/PlaceParkEntranceAction.cpp
@@ -50,8 +50,7 @@ GameActions::Result::Ptr PlaceParkEntranceAction::Query() const
     res->Expenditure = ExpenditureType::LandPurchase;
     res->Position = { _loc.x, _loc.y, _loc.z };
 
-    if (!LocationValid(_loc) || _loc.x <= 32 || _loc.y <= 32 || _loc.x >= (gMapSizeUnits - 32)
-        || _loc.y >= (gMapSizeUnits - 32))
+    if (!LocationValid(_loc) || map_is_edge(_loc))
     {
         return std::make_unique<GameActions::Result>(
             GameActions::Status::InvalidParameters, STR_CANT_BUILD_THIS_HERE, STR_TOO_CLOSE_TO_EDGE_OF_MAP);
diff --git a/src/openrct2/paint/tile_element/Paint.TileElement.cpp b/src/openrct2/paint/tile_element/Paint.TileElement.cpp
index f015922d4a..cd7626c086 100644
--- a/src/openrct2/paint/tile_element/Paint.TileElement.cpp
+++ b/src/openrct2/paint/tile_element/Paint.TileElement.cpp
@@ -47,7 +47,7 @@ const int32_t SEGMENTS_ALL = SEGMENT_B4 | SEGMENT_B8 | SEGMENT_BC | SEGMENT_C0 |
  */
 void tile_element_paint_setup(paint_session* session, const CoordsXY& mapCoords, bool isTrackPiecePreview)
 {
-    if (mapCoords.x < gMapSizeUnits && mapCoords.y < gMapSizeUnits && mapCoords.x >= 32 && mapCoords.y >= 32)
+    if (!map_is_edge(mapCoords))
     {
         paint_util_set_segment_support_height(session, SEGMENTS_ALL, 0xFFFF, 0);
         paint_util_force_set_general_support_height(session, -1, 0);
diff --git a/src/openrct2/world/Map.cpp b/src/openrct2/world/Map.cpp
index 1f4e5ad951..618ec14d36 100644
--- a/src/openrct2/world/Map.cpp
+++ b/src/openrct2/world/Map.cpp
@@ -1322,7 +1322,7 @@ std::unique_ptr<GameActions::ConstructClearResult> MapCanConstructWithClearAt(
 
     res->GroundFlags = ELEMENT_IS_ABOVE_GROUND;
     bool canBuildCrossing = false;
-    if (pos.x >= gMapSizeUnits || pos.y >= gMapSizeUnits || pos.x < 32 || pos.y < 32)
+    if (map_is_edge(pos))
     {
         res->Error = GameActions::Status::InvalidParameters;
         res->ErrorMessage = STR_OFF_EDGE_OF_MAP;