diff --git a/platform/mellanox/integration-scripts/helper.py b/platform/mellanox/integration-scripts/helper.py
index 4c7587e516d..1b498130bcf 100644
--- a/platform/mellanox/integration-scripts/helper.py
+++ b/platform/mellanox/integration-scripts/helper.py
@@ -156,7 +156,7 @@ def parse_opts_strs(kcfg_sec: list) -> list(tuple()):
     def get_writable_opts(opts):
         lines = []
         for opt in opts:
-            lines.append("{}={}".format(opt[0].upper(), opt[1]))
+            lines.append("{}={}".format(opt[0], opt[1]))
         return lines
 
 
diff --git a/platform/mellanox/integration-scripts/tests/test_filehandler.py b/platform/mellanox/integration-scripts/tests/test_filehandler.py
index 8b7c39ae137..a38328d839d 100644
--- a/platform/mellanox/integration-scripts/tests/test_filehandler.py
+++ b/platform/mellanox/integration-scripts/tests/test_filehandler.py
@@ -48,7 +48,7 @@
 CONFIG_I2C_I801=m
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_INTEL=m
-CONFIG_I2C_MUX_PCA954X=m
+CONFIG_I2C_MUX_PCA954x=m
 CONFIG_SPI_PXA2XX=m
 """
 
@@ -68,7 +68,7 @@
 CONFIG_I2C_I801=m
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_INTEL=m
-CONFIG_I2C_MUX_PCA954X=m
+CONFIG_I2C_MUX_PCA954x=m
 CONFIG_SPI_PXA2XX=m
 ###-> mellanox-end