diff --git a/server/src/scimodom/services/file.py b/server/src/scimodom/services/file.py
index 6cb81415..af5203fd 100644
--- a/server/src/scimodom/services/file.py
+++ b/server/src/scimodom/services/file.py
@@ -221,6 +221,15 @@ def create_project_metadata_file(self, smid: str) -> TextIO:
         metadata_file = Path(self._get_project_metadata_dir(), f"{smid}.json")
         return open(metadata_file, "w", opener=write_opener)
 
+    def delete_project_metadata_file(self, smid: str) -> None:
+        """Remove a metadata file.
+
+        :param smid: Sci-ModoM ID (SMID)
+        :type smid: str
+        """
+        path = Path(self._get_project_metadata_dir(), f"{smid}.json")
+        path.unlink()
+
     def create_project_request_file(self, request_uuid) -> TextIO:
         """Open a metadata (request) file for writing.
 
diff --git a/server/src/scimodom/services/project.py b/server/src/scimodom/services/project.py
index 9cc7970a..fc1f3853 100644
--- a/server/src/scimodom/services/project.py
+++ b/server/src/scimodom/services/project.py
@@ -146,6 +146,7 @@ def delete_project(self, project: Project) -> None:
             if len(contact.projects) == 1:
                 self._session.delete(contact)
             self._session.delete(project)
+            self._file_service.delete_project_metadata_file(project.id)
             self._session.commit()
         except Exception:
             self._session.rollback()
diff --git a/server/tests/unit/services/test_project.py b/server/tests/unit/services/test_project.py
index ca65b311..eed7f671 100644
--- a/server/tests/unit/services/test_project.py
+++ b/server/tests/unit/services/test_project.py
@@ -30,6 +30,7 @@ class MockFileService:
     def __init__(self):
         self.files_by_name: dict[str, MockStringIO | MockBytesIO] = {}
         self.deleted_requests: list[str] = []
+        self.deleted_projects: list[str] = []
 
     def create_project_metadata_file(self, smid: str) -> TextIO:
         metadata_file = Path(
@@ -51,6 +52,10 @@ def delete_project_request_file(self, request_uuid) -> None:
         name = self._get_project_request_file_path(request_uuid).as_posix()
         self.deleted_requests.append(name)
 
+    def delete_project_metadata_file(self, smid) -> None:
+        name = Path(self._get_project_metadata_dir(), f"{smid}.json").as_posix()
+        self.deleted_projects.append(name)
+
     def _get_project_metadata_dir(self) -> Path:
         return Path("/data", "metadata")
 
@@ -379,3 +384,4 @@ def test_delete_project(Session, project, file_service):
             session.scalar(select(func.count()).select_from(UserProjectAssociation))
             == 0
         )
+    assert file_service.deleted_projects == ["/data/metadata/12345678.json"]