diff --git a/apps/opencs/editor.cpp b/apps/opencs/editor.cpp
index 7e9abcf4da..82a3c6e2f5 100644
--- a/apps/opencs/editor.cpp
+++ b/apps/opencs/editor.cpp
@@ -45,7 +45,7 @@ CS::Editor::Editor(int argc, char** argv)
     , mSettingsState(mCfgMgr)
     , mDocumentManager(mCfgMgr)
     , mPid(std::filesystem::temp_directory_path() / "openmw-cs.pid")
-    , mLockFile(QFileInfo(mPid.c_str()).absoluteFilePath() + ".lock")
+    , mLockFile(QFileInfo(Files::pathToQString(mPid)).absoluteFilePath() + ".lock")
     , mMerge(mDocumentManager)
     , mIpcServerName("org.openmw.OpenCS")
     , mServer(nullptr)