diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2dbaa1d90..ad76b48aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ All notable changes to this project will be documented in this file.
 - Display descriptor for ST7735 128x160 display
 - Matter support for Occupancy via Switch (experimental)
 - Berry RS256 crypto algorithm (RSASSA-MCKS1_v1-5 with SHA256) used for JWT
+- Berry add `set_lsb_justified(bool)` to `AudioOutputI2S`
 
 ### Breaking Changed
 - Matter relay number starts at 1 instead of 0 to match Tasmota numbering
diff --git a/lib/libesp32/berry_tasmota/src/be_i2s_audio_lib.cpp b/lib/libesp32/berry_tasmota/src/be_i2s_audio_lib.cpp
index 4ff02c6e1..9ded69468 100644
--- a/lib/libesp32/berry_tasmota/src/be_i2s_audio_lib.cpp
+++ b/lib/libesp32/berry_tasmota/src/be_i2s_audio_lib.cpp
@@ -149,6 +149,14 @@ int32_t be_audio_output_consume_silence(struct bvm *vm) {
 
 #include "AudioOutputI2S.h"
 
+// AudioOutputI2S.set_lsb_justified(gain:real) -> nil
+int i2s_output_i2s_set_lsb_justified_ntv(AudioOutputI2S* out, bbool lsbJustified) {
+  return out->SetLsbJustified(lsbJustified);
+}
+int32_t i2s_output_i2s_set_lsb_justified(struct bvm *vm) {
+  return be_call_c_func(vm, (void*) &i2s_output_i2s_set_lsb_justified_ntv, "", ".b");
+}
+
 extern "C" {
   
 #include "be_fixed_be_class_AudioOutput.h"
@@ -196,6 +204,8 @@ class be_class_AudioOutputI2S (scope: global, name: AudioOutputI2S, super: be_cl
     init, func(i2s_output_i2s_init)
     deinit, func(i2s_output_i2s_deinit)
     stop, func(i2s_output_i2s_stop)
+
+    set_lsb_justified, func(i2s_output_i2s_set_lsb_justified)
 }
 
 class be_class_AudioGeneratorWAV (scope: global, name: AudioGeneratorWAV, super: be_class_AudioGenerator, strings: weak) {