diff --git a/game/src/game/mod.rs b/game/src/game/mod.rs
index 511063c..22c4adb 100644
--- a/game/src/game/mod.rs
+++ b/game/src/game/mod.rs
@@ -73,7 +73,7 @@ impl Game {
 
                                 // Check for target promotion.
                                 let hex = Hex::from_tile(play.to);
-                                if !target.promoted && !Hex::is_back(hex.x, hex.y, target.player) {
+                                if !target.promoted && Hex::is_back(hex.x, hex.y, target.player) {
                                     println!("promotion {} {} ({}, {})", target.class, play.to, hex.x, hex.y);
                                     target.promoted = true;
                                 }
@@ -102,7 +102,7 @@ impl Game {
 
                     // Check for piece promotion.
                     let hex = Hex::from_tile(play.from);
-                    if !piece.promoted && !Hex::is_back(hex.x, hex.y, piece.player) {
+                    if !piece.promoted && Hex::is_back(hex.x, hex.y, piece.player) {
                         println!("promotion {} {} ({}, {})", piece.class, play.to, hex.x, hex.y);
                         if let Some(piece) = &mut self.board.pieces[pid as usize] {
                             piece.promoted = true;