diff --git a/app/src/main/java/io/legado/app/ui/book/changecover/ChangeCoverDialog.kt b/app/src/main/java/io/legado/app/ui/book/changecover/ChangeCoverDialog.kt
index 64bffb3b6..e04c3dba8 100644
--- a/app/src/main/java/io/legado/app/ui/book/changecover/ChangeCoverDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/changecover/ChangeCoverDialog.kt
@@ -3,6 +3,7 @@ package io.legado.app.ui.book.changecover
 import android.os.Bundle
 import android.view.MenuItem
 import android.view.View
+import android.view.ViewGroup
 import androidx.appcompat.widget.Toolbar
 import androidx.fragment.app.viewModels
 import androidx.recyclerview.widget.GridLayoutManager
@@ -40,7 +41,7 @@ class ChangeCoverDialog() : BaseDialogFragment(R.layout.dialog_change_cover),
 
     override fun onStart() {
         super.onStart()
-        setLayout(0.9f, 0.9f)
+        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
     }
 
     override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
diff --git a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceDialog.kt b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceDialog.kt
index 8fb10ec71..7f6074fb4 100644
--- a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceDialog.kt
@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
+import android.view.ViewGroup
 import androidx.appcompat.widget.SearchView
 import androidx.appcompat.widget.Toolbar
 import androidx.core.os.bundleOf
@@ -54,7 +55,7 @@ class ChangeBookSourceDialog() : BaseDialogFragment(R.layout.dialog_book_change_
 
     override fun onStart() {
         super.onStart()
-        setLayout(0.9f, 0.9f)
+        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
     }
 
     override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
diff --git a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeChapterSourceDialog.kt b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeChapterSourceDialog.kt
index abf42d7d2..640461978 100644
--- a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeChapterSourceDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/changesource/ChangeChapterSourceDialog.kt
@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
+import android.view.ViewGroup
 import androidx.appcompat.widget.SearchView
 import androidx.appcompat.widget.Toolbar
 import androidx.core.os.bundleOf
@@ -76,7 +77,7 @@ class ChangeChapterSourceDialog() : BaseDialogFragment(R.layout.dialog_chapter_c
 
     override fun onStart() {
         super.onStart()
-        setLayout(0.9f, 0.9f)
+        setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
     }
 
     override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {