diff --git a/tidepool-utils/fumen-replay.js b/tidepool-utils/fumen-replay.js
index 1b0e061..6bdd9c1 100644
--- a/tidepool-utils/fumen-replay.js
+++ b/tidepool-utils/fumen-replay.js
@@ -20,11 +20,11 @@ export async function main(args) {
         let mino = {
             type: move.type,
             rotation: {
-                'north': 'spawn',
-                'east': 'right',
-                'south': 'reverse',
-                'west': 'left',
-            }[move.orientation],
+                N: 'spawn',
+                E: 'right',
+                S: 'reverse',
+                W: 'left',
+            }[move.r],
             x: move.x,
             y: move.y,
         };
diff --git a/tidepool/src/output.rs b/tidepool/src/output.rs
index 76e9de2..fd63da9 100644
--- a/tidepool/src/output.rs
+++ b/tidepool/src/output.rs
@@ -55,27 +55,18 @@ mod ser {
             ty: char,
             x: i16,
             y: i16,
-            orientation: Orientation,
-        }
-
-        #[derive(Serialize)]
-        #[serde(rename_all = "lowercase")]
-        enum Orientation {
-            North,
-            East,
-            South,
-            West,
+            r: char,
         }
 
         Placement {
             ty: pc.ty.as_char(),
             x: pc.loc.x,
             y: pc.loc.y,
-            orientation: match pc.loc.r {
-                mino::Rot::N => Orientation::North,
-                mino::Rot::E => Orientation::East,
-                mino::Rot::S => Orientation::South,
-                mino::Rot::W => Orientation::West,
+            r: match pc.loc.r {
+                mino::Rot::N => 'N',
+                mino::Rot::E => 'E',
+                mino::Rot::S => 'S',
+                mino::Rot::W => 'W',
             },
         }
         .serialize(serializer)