diff --git a/src/world/map.c b/src/world/map.c
index c4dfe17bbc..31262ad01c 100644
--- a/src/world/map.c
+++ b/src/world/map.c
@@ -65,7 +65,7 @@ static void map_set_grass_length(int x, int y, rct_map_element *mapElement, int
 static void sub_68ADBC();
 static void sub_68AE2A(int x, int y);
 
-void rotate_map_coordinates(sint16* x, sint16* y, uint8 rotation){
+void rotate_map_coordinates(sint16* x, sint16* y, int rotation){
 	int temp;
 	switch (rotation){
 	case MAP_ELEMENT_DIRECTION_WEST:
@@ -87,7 +87,7 @@ void rotate_map_coordinates(sint16* x, sint16* y, uint8 rotation){
 	}
 }
 
-rct_xy16 coordinate_3d_to_2d(const rct_xyz16* coordinate_3d, uint8 rotation){
+rct_xy16 coordinate_3d_to_2d(const rct_xyz16* coordinate_3d, int rotation){
 	rct_xy16 coordinate_2d;
 
 	switch (rotation){
diff --git a/src/world/map.h b/src/world/map.h
index c1f1c9de23..6fcf3df8b2 100644
--- a/src/world/map.h
+++ b/src/world/map.h
@@ -282,8 +282,8 @@ int sub_68B044();
 rct_map_element *map_element_insert(int x, int y, int z, int flags);
 int map_can_construct_with_clear_at(int x, int y, int zLow, int zHigh, void *clearFunc, uint8 bl);
 int map_can_construct_at(int x, int y, int zLow, int zHigh, uint8 bl);
-void rotate_map_coordinates(sint16* x, sint16* y, uint8 rotation);
-rct_xy16 coordinate_3d_to_2d(const rct_xyz16* coordinate_3d, uint8 rotation);
+void rotate_map_coordinates(sint16* x, sint16* y, int rotation);
+rct_xy16 coordinate_3d_to_2d(const rct_xyz16* coordinate_3d, int rotation);
 money32 map_clear_scenery(int x0, int y0, int x1, int y1, int flags);
 money32 lower_water(sint16 x0, sint16 y0, sint16 x1, sint16 y1, uint8 flags);
 money32 raise_water(sint16 x0, sint16 y0, sint16 x1, sint16 y1, uint8 flags);