diff --git a/src/gba/gba-io.c b/src/gba/gba-io.c
index cee554037..5628b7384 100644
--- a/src/gba/gba-io.c
+++ b/src/gba/gba-io.c
@@ -297,7 +297,7 @@ void GBAIOWrite(struct GBA* gba, uint32_t address, uint16_t value) {
 		case REG_DISPSTAT:
 			value &= 0xFFF8;
 			GBAVideoWriteDISPSTAT(&gba->video, value);
-			break;
+			return;
 
 		// Audio
 		case REG_SOUND1CNT_LO:
diff --git a/src/gba/gba-video.c b/src/gba/gba-video.c
index 424a5f9b8..0cd7f52d5 100644
--- a/src/gba/gba-video.c
+++ b/src/gba/gba-video.c
@@ -169,7 +169,7 @@ int32_t GBAVideoProcessEvents(struct GBAVideo* video, int32_t cycles) {
 
 void GBAVideoWriteDISPSTAT(struct GBAVideo* video, uint16_t value) {
 	video->p->memory.io[REG_DISPSTAT >> 1] &= 0x7;
-	video->p->memory.io[REG_DISPSTAT >> 1] |= value & 0xFFF8;
+	video->p->memory.io[REG_DISPSTAT >> 1] |= value;
 
 	uint16_t dispstat = video->p->memory.io[REG_DISPSTAT >> 1];