diff --git a/app/src/main/java/io/legado/app/base/AppContextWrapper.kt b/app/src/main/java/io/legado/app/base/AppContextWrapper.kt
index 74a7fa253..7ef7026d3 100644
--- a/app/src/main/java/io/legado/app/base/AppContextWrapper.kt
+++ b/app/src/main/java/io/legado/app/base/AppContextWrapper.kt
@@ -15,7 +15,7 @@ object AppContextWrapper {
 
     fun wrap(context: Context): Context {
         var fontScale = context.getPrefInt(PreferKey.fontScale) / 10f
-        if (fontScale !in 1f..2f) {
+        if (fontScale !in 0.8f..1.6f) {
             fontScale = Configuration().fontScale
         }
         return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
diff --git a/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt b/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
index 79d3147bc..32940bd94 100644
--- a/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
@@ -155,8 +155,8 @@ class ThemeConfigFragment : BasePreferenceFragment(),
                 }
             PreferKey.fontScale -> NumberPickerDialog(requireContext())
                 .setTitle(getString(R.string.font_scale))
-                .setMaxValue(20)
-                .setMinValue(10)
+                .setMaxValue(16)
+                .setMinValue(8)
                 .setCustomButton((R.string.btn_default_s)) {
                     putPrefInt(PreferKey.fontScale, 0)
                     recreateActivities()
@@ -277,7 +277,7 @@ class ThemeConfigFragment : BasePreferenceFragment(),
                 getString(R.string.bar_elevation_s, value)
             PreferKey.fontScale -> {
                 var fontScale = getPrefInt(PreferKey.fontScale) / 10f
-                if (fontScale !in 1f..2f) {
+                if (fontScale !in 0.8f..1.6f) {
                     fontScale = resources.configuration.fontScale
                 }
                 preference.summary = getString(R.string.font_scale_summary, fontScale)