diff --git a/novelwriter/core/project.py b/novelwriter/core/project.py
index 37153e71..51cc8955 100644
--- a/novelwriter/core/project.py
+++ b/novelwriter/core/project.py
@@ -407,7 +407,6 @@ class NWProject(QObject):
         self._options.saveSettings()
         self._tree.writeToCFile()
         self._session.appendSession(idleTime)
-        self._storage.clearLockFile()
         self._storage.closeSession()
         self.clearProject()
         self._lockedBy = None
diff --git a/novelwriter/core/storage.py b/novelwriter/core/storage.py
index b97a42e4..84e4ee35 100644
--- a/novelwriter/core/storage.py
+++ b/novelwriter/core/storage.py
@@ -67,6 +67,7 @@ class NWStorage:
         """Reset internal variables."""
         self._storagePath = None
         self._runtimePath = None
+        self._lockFilePath = None
         self._openMode = self.MODE_INACTIVE
         return
 
@@ -146,7 +147,7 @@ class NWStorage:
 
     def closeSession(self):
         """Run tasks related to closing the session."""
-        # Clear lockfile
+        self.clearLockFile()
         self.clear()
         return
 
@@ -189,7 +190,7 @@ class NWStorage:
             if item.suffix == ".nwd" and isHandle(item.stem)
         ] if contentPath else []
 
-    def readLockFile(self) -> list:
+    def readLockFile(self) -> list[str]:
         """Read the project lock file."""
         if self._lockFilePath is None:
             return ["ERROR"]
@@ -198,7 +199,7 @@ class NWStorage:
             return []
 
         try:
-            lines = self._lockFilePath.read_text(encoding="utf-8").split(";")
+            lines = self._lockFilePath.read_text(encoding="utf-8").strip().split(";")
         except Exception:
             logger.error("Failed to read project lockfile")
             logException()
diff --git a/tests/test_core/test_core_project.py b/tests/test_core/test_core_project.py
index b4d5f338..3ac7b54f 100644
--- a/tests/test_core/test_core_project.py
+++ b/tests/test_core/test_core_project.py
@@ -29,6 +29,7 @@ from tools import C, cmpFiles, writeFile, buildTestProject, XML_IGNORE
 
 from novelwriter import CONFIG
 from novelwriter.enum import nwItemClass, nwItemType, nwItemLayout
+from novelwriter.constants import nwFiles
 from novelwriter.core.tree import NWTree
 from novelwriter.core.index import NWIndex
 from novelwriter.core.project import NWProject
@@ -172,7 +173,8 @@ def testCoreProject_Open(monkeypatch, caplog, mockGUI, fncPath, mockRnd):
         assert theProject.openProject(fncPath) is False
 
     # Fail on lock file
-    assert theProject._storage.writeLockFile()
+    theProject.storage._lockFilePath = fncPath / nwFiles.PROJ_LOCK
+    assert theProject.storage.writeLockFile() is True
     assert theProject.openProject(fncPath) is False
     assert isinstance(theProject.getLockStatus(), list)
 
@@ -185,7 +187,8 @@ def testCoreProject_Open(monkeypatch, caplog, mockGUI, fncPath, mockRnd):
         theProject.closeProject()
 
     # Force open with lockfile
-    assert theProject._storage.writeLockFile()
+    theProject.storage._lockFilePath = fncPath / nwFiles.PROJ_LOCK
+    assert theProject.storage.writeLockFile() is True
     assert theProject.openProject(fncPath, overrideLock=True) is True
     theProject.closeProject()
     assert theProject.getLockStatus() is None
diff --git a/tests/test_core/test_core_storage.py b/tests/test_core/test_core_storage.py
index 61ac2152..77db582b 100644
--- a/tests/test_core/test_core_storage.py
+++ b/tests/test_core/test_core_storage.py
@@ -92,7 +92,7 @@ def testCoreStorage_OpenProjectInPlace(mockGUI, fncPath, mockRnd):
     assert isinstance(storage.getXmlWriter(), ProjectXMLWriter)
 
     # Get content
-    assert sorted(storage.scanContent()) == sorted([C.hTitlePage, C.hChapterDoc, C.hSceneDoc])
+    assert sorted(storage.scanContent()) == [C.hTitlePage, C.hChapterDoc, C.hSceneDoc]
 
     # Get document
     assert storage.getDocument(C.hSceneDoc).readDocument() == "### New Scene\n\n"