diff --git a/src/d_netcmd.c b/src/d_netcmd.c
index 0b7e3de18..a806a1052 100644
--- a/src/d_netcmd.c
+++ b/src/d_netcmd.c
@@ -382,7 +382,7 @@ char timedemo_csv_id[256];
 boolean timedemo_quit;
 
 INT16 gametype = GT_COOP;
-INT16 gametyperules = 0;
+UINT32 gametyperules = 0;
 boolean splitscreen = false;
 boolean circuitmap = false;
 INT32 adminplayers[MAXPLAYERS];
diff --git a/src/doomstat.h b/src/doomstat.h
index 3f76e770e..c51b98c3f 100644
--- a/src/doomstat.h
+++ b/src/doomstat.h
@@ -84,7 +84,7 @@ extern boolean addedtogame; // true after the server has added you
 extern boolean multiplayer;
 
 extern INT16 gametype;
-extern INT16 gametyperules;
+extern UINT32 gametyperules;
 extern boolean splitscreen;
 extern boolean circuitmap; // Does this level have 'circuit mode'?
 extern boolean fromlevelselect;