diff --git a/Set-Metatile-IDs-From-Another-Map.md b/Set-Metatile-IDs-From-Another-Map.md
index 8e60564..0bc03da 100644
--- a/Set-Metatile-IDs-From-Another-Map.md
+++ b/Set-Metatile-IDs-From-Another-Map.md
@@ -6,7 +6,7 @@ credit to ghoulslash
 Open fieldmap.c and add this function somewhere:
 ```c
 extern void DrawWholeMapView(void);
-void CopyMetatileIdsFromMapLayout(u16 mapGroup, u16 mapNum, const u16 pos[][2])
+void CopyMetatileIdsFromMapLayout(u16 mapGroup, u16 mapNum, const u8 pos[][2])
 {
     u32 i, block, x, y;
     struct MapLayout const *layout = Overworld_GetMapHeaderByGroupAndId(mapGroup, mapNum)->mapLayout;
@@ -27,7 +27,7 @@ void CopyMetatileIdsFromMapLayout(u16 mapGroup, u16 mapNum, const u16 pos[][2])
 It works by taking a map group and number and array of (x,y) positions and copies them into the current map from the given layout. An example of the `pos` argument:
 - If I want to copy the first 2 columns of a map from y positions 0 through 7:
 ```c
-static const u16 sTestPositions[][2] = {
+static const u8 sTestPositions[][2] = {
     {0, 0}, {0, 1}, {0, 2}, {0, 3}, {0, 4}, {0, 5}, {0, 6}, {0, 7},
     {1, 0}, {1, 1}, {1, 2}, {1, 3}, {1, 4}, {1, 5}, {1, 6}, {1, 7},
     {0xFF, 0xFF}, // to signify the end of the array