diff --git a/device/dell/x86_64-dell_s6100_c2538-r0/installer.conf b/device/dell/x86_64-dell_s6100_c2538-r0/installer.conf
index 0a9a3a639eb..5efc436529e 100644
--- a/device/dell/x86_64-dell_s6100_c2538-r0/installer.conf
+++ b/device/dell/x86_64-dell_s6100_c2538-r0/installer.conf
@@ -1,3 +1,3 @@
 CONSOLE_PORT=0x2f8
 CONSOLE_DEV=1
-ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="module_blacklist=gpio_ich"
+ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="module_blacklist=gpio_ich,i2c_mux_gpio"
diff --git a/device/dell/x86_64-dell_z9100_c2538-r0/installer.conf b/device/dell/x86_64-dell_z9100_c2538-r0/installer.conf
index 0a9a3a639eb..5efc436529e 100644
--- a/device/dell/x86_64-dell_z9100_c2538-r0/installer.conf
+++ b/device/dell/x86_64-dell_z9100_c2538-r0/installer.conf
@@ -1,3 +1,3 @@
 CONSOLE_PORT=0x2f8
 CONSOLE_DEV=1
-ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="module_blacklist=gpio_ich"
+ONIE_PLATFORM_EXTRA_CMDLINE_LINUX="module_blacklist=gpio_ich,i2c_mux_gpio"