diff --git a/src/gba/renderers/video-software.c b/src/gba/renderers/video-software.c
index a4609c01b..0b3df681a 100644
--- a/src/gba/renderers/video-software.c
+++ b/src/gba/renderers/video-software.c
@@ -627,7 +627,7 @@ static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* render
 	}
 	if (softwareRenderer->target1Obj && (softwareRenderer->blendEffect == BLEND_DARKEN || softwareRenderer->blendEffect == BLEND_BRIGHTEN)) {
 		x = 0;
-		uint32_t mask = 0xFF000000 & ~FLAG_OBJWIN;
+		uint32_t mask = FLAG_REBLEND | FLAG_TARGET_1 | FLAG_IS_BACKGROUND;
 		uint32_t match = FLAG_REBLEND;
 		if (GBARegisterDISPCNTIsObjwinEnable(softwareRenderer->dispcnt)) {
 			mask |= FLAG_OBJWIN;