diff --git a/device/mellanox/x86_64-mlnx_msn4700-r0/optics_si_settings.json b/device/mellanox/x86_64-mlnx_msn4700-r0/optics_si_settings.json
index b66d3513ef2d..bf71e818a869 100644
--- a/device/mellanox/x86_64-mlnx_msn4700-r0/optics_si_settings.json
+++ b/device/mellanox/x86_64-mlnx_msn4700-r0/optics_si_settings.json
@@ -1,6 +1,6 @@
 {
     "GLOBAL_MEDIA_SETTINGS": {
-        "0-31": {
+        "1-32": {
             "50G_SPEED": {
                 "Default": {
                     "OutputAmplitudeTargetRx": {