diff --git a/ModManager.py b/ModManager.py
index 6376a9a..76efe51 100755
--- a/ModManager.py
+++ b/ModManager.py
@@ -6,7 +6,7 @@ import os
 import shutil
 import sys
 import tempfile
-from typing import Tuple, List
+from typing import Tuple
 from zipfile import ZipFile
 
 from PyQt6 import QtWidgets
@@ -17,7 +17,9 @@ from window.main_window import MainWindow
 
 
 class ModManager:
-    VERSION = "0.3"
+    VERSION = "0.3.1"
+
+    UNKNOWN_MOD_VERSION_STRING = "Not Tracked"
 
     def __init__(self, log_level: int = logging.INFO):
         self.__logger = logging.getLogger("ModManager")
@@ -283,7 +285,7 @@ class ModManager:
             if file in unresolved_files:
                 unknown_mod[os.path.basename(file)] = {"mod_files": [file]}
         for key in unknown_mod.keys():
-            self.installed_mods[key] = unknown_mod[key]
+            self.installed_mods[(key, ModManager.UNKNOWN_MOD_VERSION_STRING)] = unknown_mod[key]
 
         self.__window.set_installed_mods(self.installed_mods)
         self.__window.set_available_mods(self.available_mods)
diff --git a/window/main_window.py b/window/main_window.py
index 66c148f..1449863 100755
--- a/window/main_window.py
+++ b/window/main_window.py
@@ -81,7 +81,7 @@ class MainWindow(QtWidgets.QMainWindow):
             if (mod_name, mod_version) in self.parent.available_mods.keys():
                 mod_version = self.parent.available_mods[(mod_name, mod_version)]['version']
             else:
-                mod_version = "Not Tracked"
+                mod_version = self.parent.UNKNOWN_MOD_VERSION_STRING
             item = QStandardItem(mod_name + f" ({mod_version})")
             item.setFlags(Qt.ItemFlag.ItemIsUserCheckable | Qt.ItemFlag.ItemIsEnabled)
             item.setData(Qt.CheckState.Unchecked, Qt.ItemDataRole.CheckStateRole)