diff --git a/drivers/media/enhancement/amvecm/local_contrast.c b/drivers/media/enhancement/amvecm/local_contrast.c
index 2b7776d92..36543b2fe 100644
--- a/drivers/media/enhancement/amvecm/local_contrast.c
+++ b/drivers/media/enhancement/amvecm/local_contrast.c
@@ -166,7 +166,7 @@ static unsigned int lc_satur_off[63] = {
 
 int tune_curve_en = 2;
 int detect_signal_range_en = 2;
-int detect_signal_range_threshold_black = 1200;
+int detect_signal_range_threshold_black = 1600;
 int detect_signal_range_threshold_white = 3200;
 
 /*local contrast begin*/