diff --git a/src/k_battle.c b/src/k_battle.c
index b526e0fb0..20b0f47e7 100644
--- a/src/k_battle.c
+++ b/src/k_battle.c
@@ -89,7 +89,7 @@ void K_CheckBumpers(void)
 	UINT8 i;
 	UINT8 numingame = 0;
 	SINT8 winnernum = -1;
-	INT32 winnerscoreadd = 0, maxroundscore = 0;
+	UINT32 winnerscoreadd = 0, maxroundscore = 0;
 	boolean nobumpers = false;
 
 	if (!(gametyperules & GTR_BUMPERS))