diff --git a/app/src/main/assets/defaultData/coverRule.json b/app/src/main/assets/defaultData/coverRule.json
index 63ecb5ad6..5efef1ee6 100644
--- a/app/src/main/assets/defaultData/coverRule.json
+++ b/app/src/main/assets/defaultData/coverRule.json
@@ -1,5 +1,5 @@
 {
-  "enable": true,
-  "searchUrl": "https://api.yousuu.com/api/search?type=title&value={{key}}&page=1&highlight=0&from=search",
-  "coverRule": "@js:java.getString(\"$..books[?(@.author == '\" + book.author + \"')].cover\")"
+  "enable": false,
+  "searchUrl": "",
+  "coverRule": ""
 }
\ No newline at end of file
diff --git a/app/src/main/assets/defaultData/directLinkUpload.json b/app/src/main/assets/defaultData/directLinkUpload.json
index 6d2a1b493..57c5551e7 100644
--- a/app/src/main/assets/defaultData/directLinkUpload.json
+++ b/app/src/main/assets/defaultData/directLinkUpload.json
@@ -14,7 +14,7 @@
   {
     "uploadUrl": "http://v2.jt12.eu/up-v2.php,{\"method\":\"POST\",\"body\": {\"file\": \"fileRequest\"},\"type\": \"multipart/form-data\"}",
     "downloadUrlRule": "$.msg",
-    "summary": "橘涂网盘·过于卡顿，如非需要永久链接。否则不建议使用(永久有效)",
+    "summary": "橘涂书源网盘2.0 Beta(永久有效)",
     "compress": false
   }
 ]
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/provider/TextChapterLayout.kt b/app/src/main/java/io/legado/app/ui/book/read/page/provider/TextChapterLayout.kt
index ddb8ebbf3..80544addf 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/provider/TextChapterLayout.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/provider/TextChapterLayout.kt
@@ -34,7 +34,6 @@ import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.ensureActive
 import kotlinx.coroutines.launch
 import java.util.LinkedList
-import java.util.Locale
 import kotlin.coroutines.coroutineContext
 import kotlin.math.roundToInt
 
@@ -339,7 +338,7 @@ class TextChapterLayout(
             }
             var height = size.height
             var width = size.width
-            when (imageStyle?.uppercase(Locale.ROOT)) {
+            when (imageStyle?.uppercase()) {
                 Book.imgStyleFull -> {
                     width = visibleWidth
                     height = size.height * visibleWidth / size.width
@@ -487,7 +486,7 @@ class TextChapterLayout(
             }
 
             isTitle && textPages.isEmpty() && pendingTextPage.lines.isEmpty() -> {
-                when (imageStyle?.uppercase(Locale.ROOT)) {
+                when (imageStyle?.uppercase()) {
                     Book.imgStyleSingle -> {
                         val ty = (visibleHeight - layout.lineCount * textHeight) / 2
                         if (ty > titleTopSpacing) ty else titleTopSpacing.toFloat()
@@ -546,7 +545,8 @@ class TextChapterLayout(
                     //标题x轴居中
                     val startX = if (
                         isTitle &&
-                        (ReadBookConfig.isMiddleTitle || emptyContent || isVolumeTitle || imageStyle == Book.imgStyleSingle)
+                        (ReadBookConfig.isMiddleTitle || emptyContent || isVolumeTitle
+                                || imageStyle?.uppercase() == Book.imgStyleSingle)
                     ) {
                         (visibleWidth - desiredWidth) / 2
                     } else {
@@ -561,7 +561,8 @@ class TextChapterLayout(
                 else -> {
                     if (
                         isTitle &&
-                        (ReadBookConfig.isMiddleTitle || emptyContent || isVolumeTitle || imageStyle == Book.imgStyleSingle)
+                        (ReadBookConfig.isMiddleTitle || emptyContent || isVolumeTitle
+                                || imageStyle?.uppercase() == Book.imgStyleSingle)
                     ) {
                         //标题居中
                         val startX = (visibleWidth - desiredWidth) / 2