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 31b6c35a5..1cfb3ec4e 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
@@ -342,8 +342,10 @@ class TextChapterLayout(
                     width = visibleWidth
                     height = size.height * visibleWidth / size.width
                     if (pageAnim != PageAnim.scrollPageAnim && height > visibleHeight - durY) {
-                        width = width * visibleHeight / height
-                        height = visibleHeight
+                        if (height > visibleHeight) {
+                            width = width * visibleHeight / height
+                            height = visibleHeight
+                        }
                         prepareNextPageIfNeed(durY + height)
                     }
                 }