diff --git a/src/vconfigmanager.cpp b/src/vconfigmanager.cpp
index a650a0ae..97640d1b 100644
--- a/src/vconfigmanager.cpp
+++ b/src/vconfigmanager.cpp
@@ -19,8 +19,6 @@ const QString VConfigManager::appName = QString("vnote");
 
 const QString VConfigManager::c_version = QString("1.18");
 
-const QString VConfigManager::c_obsoleteDirConfigFile = QString(".vnote.json");
-
 const QString VConfigManager::c_dirConfigFile = QString("_vnote.json");
 
 const QString VConfigManager::c_defaultConfigFilePath = QString(":/resources/vnote.ini");
@@ -486,22 +484,6 @@ void VConfigManager::setConfigToSessionSettings(const QString &p_section,
                                     p_value);
 }
 
-QString VConfigManager::fetchDirConfigFilePath(const QString &p_path)
-{
-    QDir dir(p_path);
-    QString fileName = c_dirConfigFile;
-
-    if (dir.exists(c_obsoleteDirConfigFile)) {
-        V_ASSERT(!dir.exists(c_dirConfigFile));
-        if (!dir.rename(c_obsoleteDirConfigFile, c_dirConfigFile)) {
-            fileName = c_obsoleteDirConfigFile;
-        }
-    }
-
-    QString filePath = QDir::cleanPath(dir.filePath(fileName));
-    return filePath;
-}
-
 QJsonObject VConfigManager::readDirectoryConfig(const QString &path)
 {
     QString configFile = fetchDirConfigFilePath(path);
diff --git a/src/vconfigmanager.h b/src/vconfigmanager.h
index df79b8e3..f195c899 100644
--- a/src/vconfigmanager.h
+++ b/src/vconfigmanager.h
@@ -8,6 +8,7 @@
 #include <QSettings>
 #include <QHash>
 #include <QLinkedList>
+#include <QDir>
 
 #include "vnotebook.h"
 #include "hgmarkdownhighlighter.h"
@@ -564,8 +565,6 @@ private:
 
     void updateMarkdownEditStyle();
 
-    // See if the old c_obsoleteDirConfigFile exists. If so, rename it to
-    // the new one; if not, use the c_dirConfigFile.
     static QString fetchDirConfigFilePath(const QString &p_path);
 
     // Read the [shortcuts] section in settings to init m_shortcuts.
@@ -936,10 +935,6 @@ private:
     // Whether user has reset the configurations.
     bool m_hasReset;
 
-    // The name of the config file in each directory, obsolete.
-    // Use c_dirConfigFile instead.
-    static const QString c_obsoleteDirConfigFile;
-
     // The name of the config file in each directory.
     static const QString c_dirConfigFile;
 
@@ -2433,4 +2428,9 @@ inline void VConfigManager::setExplorerCurrentIndex(int p_idx)
     m_explorerCurrentIndex = p_idx;
     setConfigToSessionSettings("global", "explorer_current_entry", m_explorerCurrentIndex);
 }
+
+inline QString VConfigManager::fetchDirConfigFilePath(const QString &p_path)
+{
+    return QDir(p_path).filePath(c_dirConfigFile);
+}
 #endif // VCONFIGMANAGER_H