diff --git a/drivers/media/video/gspca/ov519.c b/drivers/media/video/gspca/ov519.c
index 3d68ad5015d5fc4dd722589b29799980a2a9de70..1075668db296b314762ae0d9919c328fe8550cd5 100644
--- a/drivers/media/video/gspca/ov519.c
+++ b/drivers/media/video/gspca/ov519.c
@@ -3683,8 +3683,8 @@ static void ov511_mode_init_regs(struct sd *sd)
 	/* Check if we have enough bandwidth to disable compression */
 	fps = (interlaced ? 60 : 30) / (sd->clockdiv + 1) + 1;
 	needed = fps * sd->gspca_dev.width * sd->gspca_dev.height * 3 / 2;
-	/* 1400 is a conservative estimate of the max nr of isoc packets/sec */
-	if (needed > 1400 * packet_size) {
+	/* 1000 isoc packets/sec */
+	if (needed > 1000 * packet_size) {
 		/* Enable Y and UV quantization and compression */
 		reg_w(sd, R511_COMP_EN, 0x07);
 		reg_w(sd, R511_COMP_LUT_EN, 0x03);