diff --git a/gns3server/controller/topology.py b/gns3server/controller/topology.py
index d57b3c86..01d915ee 100644
--- a/gns3server/controller/topology.py
+++ b/gns3server/controller/topology.py
@@ -289,6 +289,10 @@ def _convert_1_3_later(topo, topo_path):
 
         node["properties"] = {}
 
+        # Some old dynamips node don't have type
+        if "type" not in old_node:
+            old_node["type"] = old_node["properties"]["platform"].upper()
+
         if old_node["type"] == "VPCSDevice":
             node["node_type"] = "vpcs"
         elif old_node["type"] == "QemuVM":
@@ -316,7 +320,7 @@ def _convert_1_3_later(topo, topo_path):
             node["symbol"] = ":/symbols/ethernet_switch.svg"
             node["console_type"] = None
             node["properties"]["ports_mapping"] = []
-            for port in old_node["ports"]:
+            for port in old_node.get("ports", []):
                 node["properties"]["ports_mapping"].append({
                     "name": "Ethernet{}".format(port["port_number"] - 1),
                     "port_number": port["port_number"] - 1,
diff --git a/tests/topologies/1_3_dynamips_missing_type/after/1_3_dynamips.gns3 b/tests/topologies/1_3_dynamips_missing_type/after/1_3_dynamips.gns3
new file mode 100644
index 00000000..eb264324
--- /dev/null
+++ b/tests/topologies/1_3_dynamips_missing_type/after/1_3_dynamips.gns3
@@ -0,0 +1,77 @@
+{
+    "auto_start": false,
+    "name": "1_3_dynamips",
+    "project_id": "ba5790e1-2f51-443e-a3cc-1a2eee132888",
+    "revision": 6,
+    "topology": {
+        "computes": [
+            {
+                "compute_id": "local",
+                "host": "127.0.0.1",
+                "name": "Local",
+                "port": 8000,
+                "protocol": "http"
+            }
+        ],
+        "drawings": [],
+        "links": [],
+        "nodes": [
+            {
+                "symbol": ":/symbols/iosv_virl.svg",
+                "compute_id": "local",
+                "console": 2001,
+                "console_type": "telnet",
+                "label": {
+                    "rotation": 0,
+                    "style": "font-family: TypeWriter;font-size: 10;font-weight: bold;fill: #000000;fill-opacity: 1.0;",
+                    "text": "R1",
+                    "x": 22,
+                    "y": -25
+                },
+                "name": "R1",
+                "node_id": "0bce6ad5-c688-4d4d-a425-f21aaf3927e2",
+                "node_type": "dynamips",
+                "port_name_format": "Ethernet{0}",
+                "port_segment_size": 0,
+                "first_port_name": null,
+                "properties": {
+                    "dynamips_id": 1,
+                    "auto_delete_disks": true,
+                    "clock_divisor": 4,
+                    "disk0": 0,
+                    "disk1": 0,
+                    "exec_area": 64,
+                    "idlemax": 500,
+                    "idlesleep": 30,
+                    "image": "c7200-adventerprisek9-mz.124-24.T8.image",
+                    "mac_addr": "ca01.2f39.0000",
+                    "midplane": "vxr",
+                    "mmap": true,
+                    "npe": "npe-400",
+                    "nvram": 512,
+                    "platform": "c7200",
+                    "power_supplies": [
+                        1,
+                        1
+                    ],
+                    "ram": 512,
+                    "sensors": [
+                        22,
+                        22,
+                        22,
+                        22
+                    ],
+                    "slot0": "C7200-IO-FE",
+                    "sparsemem": true,
+                    "startup_config": "configs/i1_startup-config.cfg",
+                    "system_id": "FTX0945W0MY"
+                },
+                "x": -112,
+                "y": -100,
+                "z": 1
+            }
+        ]
+    },
+    "type": "topology",
+    "version": "ANYSTR"
+}
diff --git a/tests/topologies/1_3_dynamips_missing_type/before/1_3_dynamips.gns3 b/tests/topologies/1_3_dynamips_missing_type/before/1_3_dynamips.gns3
new file mode 100644
index 00000000..14f2f95d
--- /dev/null
+++ b/tests/topologies/1_3_dynamips_missing_type/before/1_3_dynamips.gns3
@@ -0,0 +1,80 @@
+{
+    "auto_start": false,
+    "name": "1_3_dynamips",
+    "project_id": "ba5790e1-2f51-443e-a3cc-1a2eee132888",
+    "revision": 3,
+    "topology": {
+        "nodes": [
+            {
+                "default_symbol": ":/symbols/iosv_virl.normal.svg",
+                "description": "Router c7200",
+                "dynamips_id": 1,
+                "hover_symbol": ":/symbols/iosv_virl.selected.svg",
+                "id": 1,
+                "label": {
+                    "color": "#000000",
+                    "font": "TypeWriter,10,-1,5,75,0,0,0,0,0",
+                    "text": "R1",
+                    "x": 22.6171875,
+                    "y": -25.0
+                },
+                "ports": [
+                    {
+                        "adapter_number": 0,
+                        "id": 1,
+                        "name": "FastEthernet0/0",
+                        "port_number": 0
+                    }
+                ],
+                "properties": {
+                    "auto_delete_disks": true,
+                    "clock_divisor": 4,
+                    "console": 2001,
+                    "disk0": 0,
+                    "disk1": 0,
+                    "exec_area": 64,
+                    "idlemax": 500,
+                    "idlesleep": 30,
+                    "image": "c7200-adventerprisek9-mz.124-24.T8.image",
+                    "mac_addr": "ca01.2f39.0000",
+                    "midplane": "vxr",
+                    "mmap": true,
+                    "name": "R1",
+                    "npe": "npe-400",
+                    "nvram": 512,
+                    "platform": "c7200",
+                    "power_supplies": [
+                        1,
+                        1
+                    ],
+                    "ram": 512,
+                    "sensors": [
+                        22,
+                        22,
+                        22,
+                        22
+                    ],
+                    "slot0": "C7200-IO-FE",
+                    "sparsemem": true,
+                    "startup_config": "configs/i1_startup-config.cfg",
+                    "system_id": "FTX0945W0MY"
+                },
+                "server_id": 1,
+                "vm_id": "0bce6ad5-c688-4d4d-a425-f21aaf3927e2",
+                "x": -112.0,
+                "y": -100.0
+            }
+        ],
+        "servers": [
+            {
+                "cloud": false,
+                "host": "127.0.0.1",
+                "id": 1,
+                "local": true,
+                "port": 8000
+            }
+        ]
+    },
+    "type": "topology",
+    "version": "1.3.13"
+}