diff --git a/src/game/filemgr.c b/src/game/filemgr.c
index ab0e15ef9..e82d7af15 100644
--- a/src/game/filemgr.c
+++ b/src/game/filemgr.c
@@ -913,7 +913,7 @@ const char var7f1b31ec[] = "Multiplayer %d was using that file...\n";
  *
  * Return true if it worked, otherwise false.
  */
-bool filemgrSaveOrLoad(struct fileguid *guid, s32 fileop, u32 playernum)
+bool filemgrSaveOrLoad(struct fileguid *guid, s32 fileop, uintptr_t playernum)
 {
 	s32 device;
 
diff --git a/src/include/game/filemgr.h b/src/include/game/filemgr.h
index 80695df9d..389299af2 100644
--- a/src/include/game/filemgr.h
+++ b/src/include/game/filemgr.h
@@ -25,7 +25,7 @@ void filemgrEraseCorruptFile(void);
 char *filemgrMenuTextInsertOriginalPak(struct menuitem *item);
 void filemgrRetrySave(s32 arg0);
 bool filemgrAttemptOperation(s32 device, bool closeonsuccess);
-bool filemgrSaveOrLoad(struct fileguid *guid, s32 fileop, u32 playernum);
+bool filemgrSaveOrLoad(struct fileguid *guid, s32 fileop, uintptr_t playernum);
 void filemgrDeleteCurrentFile(void);
 void func0f1097d0(s32 device);
 void filemgrSaveGameToDevice(s32 device);
diff --git a/src/include/types.h b/src/include/types.h
index da5d058b4..79f553fc9 100644
--- a/src/include/types.h
+++ b/src/include/types.h
@@ -3816,7 +3816,7 @@ struct menudata_filemgr {
 	/*0xe42*/ u8 fileop;
 	union {
 		void *unke44;
-		s32 mpplayernum;
+		intptr_t mpplayernum;
 	};
 	/*0xe48*/ u32 fileid;
 	/*0xe4c*/ u32 deviceserial;