diff --git a/gns3server/controller/project.py b/gns3server/controller/project.py
index 3cf17af8..c185cccd 100644
--- a/gns3server/controller/project.py
+++ b/gns3server/controller/project.py
@@ -714,7 +714,7 @@ class Project:
                         f.write(data)
                 with open(os.path.join(tmpdir, "project.gns3p"), "rb") as f:
                     project = yield from import_project(self._controller, str(uuid.uuid4()), f, location=location, name=name, keep_compute_id=True)
-        except OSError as e:
+        except (OSError, UnicodeEncodeError) as e:
             raise aiohttp.web.HTTPConflict(text="Can not duplicate project: {}".format(str(e)))
 
         if previous_status == "closed":
diff --git a/tests/controller/test_project.py b/tests/controller/test_project.py
index 4422c0d1..24d019f5 100644
--- a/tests/controller/test_project.py
+++ b/tests/controller/test_project.py
@@ -23,6 +23,7 @@ import json
 import pytest
 import aiohttp
 import zipfile
+import zipstream
 from unittest.mock import MagicMock
 from tests.utils import AsyncioMagicMock, asyncio_patch
 from unittest.mock import patch
@@ -439,6 +440,15 @@ def test_duplicate(project, async_run, controller):
     assert list(new_project.nodes.values())[1].compute.id == "remote"
 
 
+def test_duplicate_with_zipfile_encoding_issues(project, async_run, controller):
+    zf = zipstream.ZipFile()
+    zf.writestr('test\udcc3', "data")
+
+    with asyncio_patch('gns3server.controller.project.export_project', return_value=zf):
+        with pytest.raises(aiohttp.web.HTTPConflict):
+            async_run(project.duplicate(name="Hello"))
+
+
 def test_snapshots(project):
     """
     List the snapshots