diff --git a/sys/src/games/gba/apu.c b/sys/src/games/gba/apu.c
index 0e0c01548..3b99a4614 100644
--- a/sys/src/games/gba/apu.c
+++ b/sys/src/games/gba/apu.c
@@ -209,7 +209,7 @@ sampletick(void *)
 	s16int s[2];
 	int i;
 	
-	addevent(&evsamp, sratediv + evsamp.time);
+	addevent(&evsamp, sratediv);
 	
 	if(--envctr == 0){
 		envctr = envrel;
diff --git a/sys/src/games/gba/ev.c b/sys/src/games/gba/ev.c
index e4612114c..fb75129ad 100644
--- a/sys/src/games/gba/ev.c
+++ b/sys/src/games/gba/ev.c
@@ -185,9 +185,11 @@ timertick(void *aux)
 	Timer *t;
 	u32int v;
 	int to;
+	ulong clock0;
 	
 	t = aux;
-	t->clock = clock + t->time & -(1 << t->sh);
+	clock0 = clock + t->time;
+	t->clock = clock0 & -(1 << t->sh);
 	t->val = -t->time >> t->sh;
 	do{
 		to = 0;
@@ -196,7 +198,7 @@ timertick(void *aux)
 			to++;
 		}while(v >= 0x10000);
 		if(t == aux)
-			addevent(t, (0x10000 - t->val << t->sh) + (-clock & (1 << t->sh) - 1));
+			addevent(t, (0x10000 - t->val << t->sh) + (-clock0 & (1 << t->sh) - 1));
 		if((*t->cnt & TIMERIRQ) != 0)
 			setif(IRQTIM0 << t->i);
 		if(t->snd)
diff --git a/sys/src/games/gba/ppu.c b/sys/src/games/gba/ppu.c
index 43d334d6c..85d1d0652 100644
--- a/sys/src/games/gba/ppu.c
+++ b/sys/src/games/gba/ppu.c
@@ -733,7 +733,7 @@ hblanktick(void *)
 	stat = reg[DISPSTAT];
 	if(hblank){
 		hblclock = clock + evhblank.time;
-		addevent(&evhblank, 240*4 + evhblank.time);
+		addevent(&evhblank, 240*4);
 		hblank = 0;
 		ppux0 = 0;
 		memset(pixpri, VACANT, sizeof(pixpri));
@@ -755,7 +755,7 @@ hblanktick(void *)
 	}else{
 		syncppu(240);
 		linecopy();
-		addevent(&evhblank, 68*4 + evhblank.time);
+		addevent(&evhblank, 68*4);
 		hblank = 1;
 		if((stat & IRQHBLEN) != 0)
 			setif(IRQHBL);