diff --git a/src/mbgl/map/transform_state.cpp b/src/mbgl/map/transform_state.cpp
index 4606e3eec..d1a320bea 100644
--- a/src/mbgl/map/transform_state.cpp
+++ b/src/mbgl/map/transform_state.cpp
@@ -132,7 +132,7 @@ double TransformState::getZoom() const {
     return scaleZoom(scale);
 }
 
-int32_t TransformState::getIntegerZoom() const {
+uint8_t TransformState::getIntegerZoom() const {
     return getZoom();
 }
 
diff --git a/src/mbgl/map/transform_state.hpp b/src/mbgl/map/transform_state.hpp
index 4d6b89573..59522d89f 100644
--- a/src/mbgl/map/transform_state.hpp
+++ b/src/mbgl/map/transform_state.hpp
@@ -47,7 +47,7 @@ public:
 
     // Zoom
     double getZoom() const;
-    int32_t getIntegerZoom() const;
+    uint8_t getIntegerZoom() const;
     double getZoomFraction() const;
 
     // Bounds