1 files changed, 6 insertions, 6 deletions

diff --git a/src/mbgl/util/tile_cover.cpp b/src/mbgl/util/tile_cover.cpp
index 5189b79f26..9e2451e1af 100644
--- a/src/mbgl/util/tile_cover.cpp
+++ b/src/mbgl/util/tile_cover.cpp
@@ -84,7 +84,7 @@ std::vector<UnwrappedTileID> tileCover(const Point<double>& tl,
                                        const Point<double>& br,
                                        const Point<double>& bl,
                                        const Point<double>& c,
-                                       int32_t z) {
+                                       uint8_t z) {
     const int32_t tiles = 1 << z;
 
     struct ID {
@@ -139,7 +139,7 @@ int32_t coveringZoomLevel(double zoom, style::SourceType type, uint16_t size) {
     }
 }
 
-std::vector<UnwrappedTileID> tileCover(const LatLngBounds& bounds_, int32_t z) {
+std::vector<UnwrappedTileID> tileCover(const LatLngBounds& bounds_, uint8_t z) {
     if (bounds_.isEmpty() ||
         bounds_.south() >  util::LATITUDE_MAX ||
         bounds_.north() < -util::LATITUDE_MAX) {
@@ -159,7 +159,7 @@ std::vector<UnwrappedTileID> tileCover(const LatLngBounds& bounds_, int32_t z) {
         z);
 }
 
-std::vector<UnwrappedTileID> tileCover(const TransformState& state, int32_t z) {
+std::vector<UnwrappedTileID> tileCover(const TransformState& state, uint8_t z) {
     assert(state.valid());
 
     const double w = state.getSize().width;
@@ -173,7 +173,7 @@ std::vector<UnwrappedTileID> tileCover(const TransformState& state, int32_t z) {
         z);
 }
 
-std::vector<UnwrappedTileID> tileCover(const Geometry<double>& geometry, int32_t z) {
+std::vector<UnwrappedTileID> tileCover(const Geometry<double>& geometry, uint8_t z) {
     std::vector<UnwrappedTileID> result;
     TileCover tc(geometry, z, true);
     while (tc.hasNext()) {
@@ -213,7 +213,7 @@ uint64_t tileCount(const Geometry<double>& geometry, uint8_t z) {
     return tileCount;
 }
 
-TileCover::TileCover(const LatLngBounds&bounds_, int32_t z) {
+TileCover::TileCover(const LatLngBounds&bounds_, uint8_t z) {
     LatLngBounds bounds = LatLngBounds::hull(
         { std::max(bounds_.south(), -util::LATITUDE_MAX), bounds_.west() },
         { std::min(bounds_.north(),  util::LATITUDE_MAX), bounds_.east() });
@@ -233,7 +233,7 @@ TileCover::TileCover(const LatLngBounds&bounds_, int32_t z) {
     impl = std::make_unique<TileCover::Impl>(z, p, false);
 }
 
-TileCover::TileCover(const Geometry<double>& geom, int32_t z, bool project/* = true*/)
+TileCover::TileCover(const Geometry<double>& geom, uint8_t z, bool project/* = true*/)
  : impl( std::make_unique<TileCover::Impl>(z, geom, project)) {
 }