diff --git a/app/src/main/java/io/legado/app/ui/main/myconfig/PreferenceFragment.kt b/app/src/main/java/io/legado/app/ui/main/myconfig/PreferenceFragment.kt
index d3f862d20..98b399c1c 100644
--- a/app/src/main/java/io/legado/app/ui/main/myconfig/PreferenceFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/main/myconfig/PreferenceFragment.kt
@@ -7,11 +7,13 @@ import androidx.preference.PreferenceFragmentCompat
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.ui.about.AboutActivity
+import io.legado.app.ui.about.DonateActivity
 import io.legado.app.ui.config.ConfigActivity
 import io.legado.app.ui.config.ConfigViewModel
 import org.jetbrains.anko.startActivity
 
-class PreferenceFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedPreferenceChangeListener {
+class PreferenceFragment : PreferenceFragmentCompat(),
+        SharedPreferences.OnSharedPreferenceChangeListener {
 
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         addPreferencesFromResource(R.xml.pref_main)
@@ -38,22 +40,18 @@ class PreferenceFragment : PreferenceFragmentCompat(), SharedPreferences.OnShare
     override fun onPreferenceTreeClick(preference: Preference?): Boolean {
         preference?.let {
             when (preference.key) {
-                "setting" -> {
-                    requireContext().startActivity<ConfigActivity>(
-                            Pair("configType", ConfigViewModel.TYPE_CONFIG)
-                    )
-                }
-                "web_dav_setting" -> {
-                    requireContext().startActivity<ConfigActivity>(
-                            Pair("configType", ConfigViewModel.TYPE_WEB_DAV_CONFIG)
-                    )
-                }
-                "theme_setting" -> {
-                    requireContext().startActivity<ConfigActivity>(
-                            Pair("configType", ConfigViewModel.TYPE_THEME_CONFIG)
-                    )
-                }
-                "about" -> requireContext().startActivity<AboutActivity>()
+                "setting" -> context?.startActivity<ConfigActivity>(
+                        Pair("configType", ConfigViewModel.TYPE_CONFIG)
+                )
+                "web_dav_setting" -> context?.startActivity<ConfigActivity>(
+                        Pair("configType", ConfigViewModel.TYPE_WEB_DAV_CONFIG)
+                )
+                "theme_setting" -> context?.startActivity<ConfigActivity>(
+                        Pair("configType", ConfigViewModel.TYPE_THEME_CONFIG)
+                )
+                "donate" -> context?.startActivity<DonateActivity>()
+                "about" -> context?.startActivity<AboutActivity>()
+                else -> null
             }
         }
         return super.onPreferenceTreeClick(preference)