diff --git a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
index 37632bc524d4..9b64f4f354bf 100644
--- a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
+++ b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
@@ -1149,7 +1149,7 @@ static void gen_twopix(struct tpg_data *tpg,
 	case V4L2_PIX_FMT_NV42:
 		buf[0][offset] = r_y_h;
 		buf[1][2 * offset] = b_v;
-		buf[1][(2 * offset + 1) %8] = g_u_s;
+		buf[1][(2 * offset + 1) % 8] = g_u_s;
 		break;
 
 	case V4L2_PIX_FMT_YUYV: