diff --git a/leaderboard.lua b/leaderboard.lua
index c969380..08e7dd9 100644
--- a/leaderboard.lua
+++ b/leaderboard.lua
@@ -1221,9 +1221,45 @@ local function writeStats()
 	end
 end
 
-local function saveTime(player)
+local function checkFlags(p)
+	local flags = 0
 
-	scoreTable =  $ or {}
+	-- Encore
+	if encoremode then
+		flags = $ | F_ENCORE
+	end
+
+	if not cv_spbatk then
+		cv_spbatk = CV_FindVar("spbatk")
+	end
+
+	-- SPBAttack
+	if server.SPBArunning and cv_spbatk.value then
+		flags = $ | F_SPBATK
+
+		if server.SPBAexpert then
+			flags = $ | F_SPBEXP
+		end
+		if p.SPBAKARTBIG then
+			flags = $ | F_SPBBIG
+		end
+		if p.SPBAjustice then
+			flags = $ | F_SPBJUS
+		end
+	end
+
+	return flags
+end
+
+local function saveTime(player)
+	-- Disqualify if the flags changed mid trial.
+	if checkFlags(player) != Flags then
+		print("Game mode change detected! Time has been disqualified.")
+		S_StartSound(nil, 110)
+		return
+	end
+
+	scoreTable = $ or {}
 
 	local pskin = skins[player.mo.skin]
 	local newscore = score_t(
@@ -1387,13 +1423,7 @@ local function think()
 		end
 
 		-- Autospec
-		-- Encore
 		if leveltime == 1 then
-			Flags = $ & !F_ENCORE
-			if encoremode then
-				Flags = $ | F_ENCORE
-			end
-
 			if p then
 				for s in players.iterate do
 					if s.valid and s.spectator then
@@ -1402,49 +1432,30 @@ local function think()
 				end
 			end
 		end
-		if not cv_spbatk then
-			cv_spbatk = CV_FindVar("spbatk")
-		end
 
-		-- Gamemode flags
-		Flags = $ & !(F_SPBATK | F_SPBEXP | F_SPBBIG | F_SPBJUS)
-		if server.SPBArunning
-		   and cv_spbatk.value
-		   and leveltime > START_TIME - (3 * TICRATE) / 2 then
-			Flags = $ | F_SPBATK
-			if server.SPBAexpert then
-				Flags = $ | F_SPBEXP
-			end
+		Flags = 0
+		if leveltime > START_TIME - (3 * TICRATE) / 2 then
 			if clearcheats then
 				clearcheats = false
-				for q in players.iterate do
-					q.SPBAKARTBIG = false
-					q.SPBAjustice = false
-					q.SPBAshutup = false
+				if p then
+					p.SPBAKARTBIG = false
+					p.SPBAjustice = false
+					p.SPBAshutup = false
 				end
 			end
 
-			if p then
-				if p.SPBAKARTBIG then
-					Flags = $ | F_SPBBIG
-				end
-				if p.SPBAjustice then
-					Flags = $ | F_SPBJUS
-				end
-			end
+			Flags = checkFlags(p)
 
 			-- make sure the spb actually spawned
-			if leveltime == START_TIME - 1 then
+			if server.SPBArunning and leveltime == START_TIME - 1 then
 				if not (server.SPBAbomb and server.SPBAbomb.valid) then
 					-- it didn't spawn, clear spb flags
 					Flags = $ & !(F_SPBATK | F_SPBEXP | F_SPBBIG | F_SPBJUS)
 				end
 			end
-
 		else
 			hud.enable("freeplay")
 		end
-
 	end
 
 	scoreTable = getScoreTable(gamemap, Flags)
@@ -1454,6 +1465,12 @@ local function think()
 	end
 
 	if p then
+		-- must be done before browser control
+		if p.laps >= mapheaderinfo[gamemap].numlaps and timeFinished == 0 then
+			timeFinished = p.realtime
+			saveTime(p)
+		end
+
 		-- Scroll controller
 		-- Spectators can't input buttons so let the gamer do it
 		if drawState == DS_SCROLL then
@@ -1509,10 +1526,6 @@ local function think()
 			end
 		end
 
-		if p.laps >= mapheaderinfo[gamemap].numlaps and timeFinished == 0 then
-			timeFinished = p.realtime
-			saveTime(p)
-		end
 		regLap(p)
 	elseif cv_teamchange.value == 0 then
 		allowJoin(true)