diff --git a/device/mellanox/x86_64-mlnx_msn4700_simx-r0/platform.json b/device/mellanox/x86_64-mlnx_msn4700_simx-r0/platform.json
index 86fcbf5b91bb..480edaa95a15 100644
--- a/device/mellanox/x86_64-mlnx_msn4700_simx-r0/platform.json
+++ b/device/mellanox/x86_64-mlnx_msn4700_simx-r0/platform.json
@@ -1,6 +1,6 @@
 {
     "chassis": {
-        "name": "MSN4700",
+        "name": "MSN4700_SIMX",
         "components": [
             {
                 "name": "ONIE"
diff --git a/device/mellanox/x86_64-nvidia_sn4280_simx-r0/platform.json b/device/mellanox/x86_64-nvidia_sn4280_simx-r0/platform.json
index 599d9269a0c5..e0640c0ce02d 100644
--- a/device/mellanox/x86_64-nvidia_sn4280_simx-r0/platform.json
+++ b/device/mellanox/x86_64-nvidia_sn4280_simx-r0/platform.json
@@ -1,6 +1,6 @@
 {
     "chassis": {
-        "name": "SN4280",
+        "name": "SN4280_SIMX",
         "components": [
             {
                 "name": "ONIE"
diff --git a/device/mellanox/x86_64-nvidia_sn5400_simx-r0/platform.json b/device/mellanox/x86_64-nvidia_sn5400_simx-r0/platform.json
index 213822ce5116..a2a9ad437419 100644
--- a/device/mellanox/x86_64-nvidia_sn5400_simx-r0/platform.json
+++ b/device/mellanox/x86_64-nvidia_sn5400_simx-r0/platform.json
@@ -1,6 +1,6 @@
 {
     "chassis": {
-        "name": "SN5400",
+        "name": "SN5400_SIMX",
         "components": [
             {
                 "name": "ONIE"
diff --git a/device/mellanox/x86_64-nvidia_sn5600_simx-r0/platform.json b/device/mellanox/x86_64-nvidia_sn5600_simx-r0/platform.json
index 2843b8318943..a10a478c4ac7 100644
--- a/device/mellanox/x86_64-nvidia_sn5600_simx-r0/platform.json
+++ b/device/mellanox/x86_64-nvidia_sn5600_simx-r0/platform.json
@@ -1,6 +1,6 @@
 {
     "chassis": {
-        "name": "SN5600",
+        "name": "SN5600_SIMX",
         "components": [
             {
                 "name": "ONIE"