diff --git a/lib-multisrc/libgroup/build.gradle.kts b/lib-multisrc/libgroup/build.gradle.kts
index 79e1d69b6..516ffede3 100644
--- a/lib-multisrc/libgroup/build.gradle.kts
+++ b/lib-multisrc/libgroup/build.gradle.kts
@@ -2,4 +2,4 @@ plugins {
     id("lib-multisrc")
 }
 
-baseVersionCode = 28
+baseVersionCode = 29
diff --git a/lib-multisrc/libgroup/src/eu/kanade/tachiyomi/multisrc/libgroup/LibGroup.kt b/lib-multisrc/libgroup/src/eu/kanade/tachiyomi/multisrc/libgroup/LibGroup.kt
index 688215108..0266b1ca3 100644
--- a/lib-multisrc/libgroup/src/eu/kanade/tachiyomi/multisrc/libgroup/LibGroup.kt
+++ b/lib-multisrc/libgroup/src/eu/kanade/tachiyomi/multisrc/libgroup/LibGroup.kt
@@ -324,7 +324,7 @@ abstract class LibGroup(
                     if (currentBranch.value.branchId == defaultBranchId && sortingList == "ms_mixing") { // ms_mixing with default branch from api
                         chapters.add(it.value.toSChapter(slugUrl, defaultBranchId, isScanUser()))
                     } else if (defaultBranchId == null && sortingList == "ms_mixing") { // ms_mixing with first branch in chapter
-                        if (chapters.any { chpIt -> chpIt.chapter_number == it.value.itemNumber }) {
+                        if (chapters.any { chpIt -> chpIt.chapter_number == it.value.number.toFloat() }) {
                             chapters.add(it.value.toSChapter(slugUrl, currentBranch.value.branchId, isScanUser()))
                         }
                     } else if (sortingList == "ms_combining") { // ms_combining
diff --git a/lib-multisrc/libgroup/src/eu/kanade/tachiyomi/multisrc/libgroup/LibGroupDto.kt b/lib-multisrc/libgroup/src/eu/kanade/tachiyomi/multisrc/libgroup/LibGroupDto.kt
index 494e66bc6..18cd1c34d 100644
--- a/lib-multisrc/libgroup/src/eu/kanade/tachiyomi/multisrc/libgroup/LibGroupDto.kt
+++ b/lib-multisrc/libgroup/src/eu/kanade/tachiyomi/multisrc/libgroup/LibGroupDto.kt
@@ -202,7 +202,6 @@ class Chapter(
     val name: String?,
     val number: String,
     val volume: String,
-    @SerialName("item_number") val itemNumber: Float?,
 ) {
     @Serializable
     class Branch(
@@ -241,7 +240,7 @@ class Chapter(
         url = "/$slugUrl/chapter?$branchStr&volume=$volume&number=$number"
         scanlator = getTeamName(branchId) ?: if (isScanUser) getUserName(branchId) else null
         date_upload = runCatching { LibGroup.simpleDateFormat.parse(first(branchId)!!.createdAt)!!.time }.getOrDefault(0L)
-        chapter_number = itemNumber ?: -1f
+        chapter_number = number.toFloat()
     }
 }