diff --git a/server/src/application/savePlayer.go b/server/src/application/savePlayer.go
index 8a71c7f..3c8d9d7 100644
--- a/server/src/application/savePlayer.go
+++ b/server/src/application/savePlayer.go
@@ -53,12 +53,12 @@ func (app *Application) SavePlayer(usr *user.User, w http.ResponseWriter, r *htt
 
 func (app *Application) modifyUser(id string, gm *game.Game, name, authcode string) error {
 	if usr, err := app.GetUserByAuthcode(authcode); err == nil && usr.GetId() != id {
-		return fmt.Errorf("authcode already in use")
+		return fmt.Errorf("%s authcode already in use", gm.GetId())
 	}
 
 	modifyUser := app.users[id]
 	if modifyUser.GetId() != id || modifyUser.GetGameId() != gm.GetId() {
-		return fmt.Errorf("couldn't find player %s in game %s", id, gm.GetId())
+		return fmt.Errorf("%s couldn't find player %s in game", gm.GetId(), id)
 	}
 	modifyUser.SetName(name)
 	modifyUser.SetAuthcode(authcode)
@@ -71,7 +71,7 @@ func (app *Application) modifyUser(id string, gm *game.Game, name, authcode stri
 
 func (app *Application) createUser(gm *game.Game, name, authcode string) error {
 	if _, err := app.GetUserByAuthcode(authcode); err == nil {
-		return fmt.Errorf("authcode already in use")
+		return fmt.Errorf("%s authcode already in use", gm.GetId())
 	}
 
 	dirName := path.Join(app.config.DataDir, "users")