diff --git a/gns3server/schemas/ethernet_hub.py b/gns3server/schemas/ethernet_hub.py
index 52534ae7..e24b33e0 100644
--- a/gns3server/schemas/ethernet_hub.py
+++ b/gns3server/schemas/ethernet_hub.py
@@ -32,7 +32,7 @@ ETHERNET_HUB_CREATE_SCHEMA = {
                 "port_number": {
                     "description": "Port number",
                     "type": "integer",
-                    "minimum": 1
+                    "minimum": 0
                 },
             },
             "required": ["name", "port_number"],
@@ -84,7 +84,7 @@ ETHERNET_HUB_OBJECT_SCHEMA = {
                 "port_number": {
                     "description": "Port number",
                     "type": "integer",
-                    "minimum": 1
+                    "minimum": 0
                 },
             },
             "required": ["name", "port_number"],
diff --git a/gns3server/schemas/ethernet_switch.py b/gns3server/schemas/ethernet_switch.py
index 6de9caa3..1a92a111 100644
--- a/gns3server/schemas/ethernet_switch.py
+++ b/gns3server/schemas/ethernet_switch.py
@@ -32,7 +32,7 @@ ETHERNET_SWITCH_CREATE_SCHEMA = {
                 "port_number": {
                     "description": "Port number",
                     "type": "integer",
-                    "minimum": 1
+                    "minimum": 0
                 },
                 "type": {
                     "description": "Port type",
@@ -96,7 +96,7 @@ ETHERNET_SWITCH_OBJECT_SCHEMA = {
                 "port_number": {
                     "description": "Port number",
                     "type": "integer",
-                    "minimum": 1
+                    "minimum": 0
                 },
                 "type": {
                     "description": "Port type",