--- a/src/eric7/Plugins/VcsPlugins/vcsGit/GitSubmodulesStatusDialog.py	Mon Dec 12 19:50:37 2022 +0100
+++ b/src/eric7/Plugins/VcsPlugins/vcsGit/GitSubmodulesStatusDialog.py	Tue Dec 13 14:03:13 2022 +0100
@@ -8,8 +8,6 @@
 project.
 """
 
-import os
-
 from PyQt6.QtCore import QProcess, Qt, pyqtSlot
 from PyQt6.QtWidgets import (
     QAbstractButton,
@@ -65,11 +63,9 @@
         @type str
         """
         # find the root of the repo
-        self.__repodir = projectDir
-        while not os.path.isdir(os.path.join(self.__repodir, self.__vcs.adminDir)):
-            self.__repodir = os.path.dirname(self.__repodir)
-            if os.path.splitdrive(self.__repodir)[1] == os.sep:
-                return
+        self.__repodir = self.__vcs.findRepoRoot(projectDir)
+        if not self.__repodir:
+            return
 
         self.errorGroup.hide()
         self.errors.clear()