diff --git a/TMessagesProj/src/main/java/xyz/nextalone/nnngram/utils/StringUtils.kt b/TMessagesProj/src/main/java/xyz/nextalone/nnngram/utils/StringUtils.kt
index a402a5fc5a..a589c06fec 100644
--- a/TMessagesProj/src/main/java/xyz/nextalone/nnngram/utils/StringUtils.kt
+++ b/TMessagesProj/src/main/java/xyz/nextalone/nnngram/utils/StringUtils.kt
@@ -126,7 +126,7 @@ object StringUtils {
         if (panguText.length == text.length) return Pair(panguText, entities) // processed or unnecessary
 
         var skip = 0
-        for (i in 0 until text.lastIndex) {
+        for (i in text.indices) {
             if (i + skip >= panguText.length) break
             if (text[i] == panguText[i + skip]) continue