diff --git a/xwords4/common/game.c b/xwords4/common/game.c
index 8a7acd5c9..78e4f0a35 100644
--- a/xwords4/common/game.c
+++ b/xwords4/common/game.c
@@ -683,7 +683,7 @@ gi_setDict( MPFORMAL CurGameInfo* gi, const DictionaryCtxt* dict )
 #endif
 
 XP_Bool
-player_hasPasswd( LocalPlayer* player )
+player_hasPasswd( const LocalPlayer* player )
 {
     XP_UCHAR* password = player->password;
     /*     XP_ASSERT( player->isLocal ); */
@@ -691,7 +691,7 @@ player_hasPasswd( LocalPlayer* player )
 } /* player_hasPasswd */
 
 XP_Bool
-player_passwordMatches( LocalPlayer* player, const XP_UCHAR* buf )
+player_passwordMatches( const LocalPlayer* player, const XP_UCHAR* buf )
 {
     XP_ASSERT( player->isLocal );
 
diff --git a/xwords4/common/game.h b/xwords4/common/game.h
index 6a68a9bf0..caeea7140 100644
--- a/xwords4/common/game.h
+++ b/xwords4/common/game.h
@@ -99,8 +99,8 @@ void gi_readFromStream( MPFORMAL XWStreamCtxt* stream, CurGameInfo* gi );
 void gi_copy( MPFORMAL CurGameInfo* destGI, const CurGameInfo* srcGi );
 XP_U16 gi_countLocalPlayers( const CurGameInfo* gi, XP_Bool humanOnly );
 
-XP_Bool player_hasPasswd( LocalPlayer* player );
-XP_Bool player_passwordMatches( LocalPlayer* player, const XP_UCHAR* pwd );
+XP_Bool player_hasPasswd( const LocalPlayer* player );
+XP_Bool player_passwordMatches( const LocalPlayer* player, const XP_UCHAR* pwd );
 XP_U16 player_timePenalty( CurGameInfo* gi, XP_U16 playerNum );
 
 #ifdef CPLUS