diff --git a/app/src/main/java/io/legado/app/help/JsExtensions.kt b/app/src/main/java/io/legado/app/help/JsExtensions.kt
index e5dd147e7..6a7b2685b 100644
--- a/app/src/main/java/io/legado/app/help/JsExtensions.kt
+++ b/app/src/main/java/io/legado/app/help/JsExtensions.kt
@@ -453,8 +453,11 @@ interface JsExtensions {
         contentArray.forEachIndexed { index, s ->
             val oldCode = s.code
             if (font1.inLimit(s)) {
-                val code = font2.getCodeByGlyf(font1.getGlyfByCode(oldCode))
-                if (code != 0) contentArray[index] = code.toChar()
+                val glyf = font1.getGlyfByCode(oldCode)
+                val code = font2.getCodeByGlyf(glyf)
+                if (code != 0) {
+                    contentArray[index] = code.toChar()
+                }
             }
         }
         return contentArray.joinToString("")