diff --git a/devine/core/constants.py b/devine/core/constants.py
index 447351c..13adfff 100644
--- a/devine/core/constants.py
+++ b/devine/core/constants.py
@@ -5,18 +5,6 @@ DOWNLOAD_CANCELLED = Event()
 DOWNLOAD_LICENCE_ONLY = Event()
 
 DRM_SORT_MAP = ["ClearKey", "Widevine"]
-LANGUAGE_MUX_MAP = {
-    # List of language tags that cannot be used by mkvmerge and need replacements.
-    # Try get the replacement to be as specific locale-wise as possible.
-    # A bcp47 as the replacement is recommended.
-    "cmn": "zh",
-    "cmn-Hant": "zh-Hant",
-    "cmn-Hans": "zh-Hans",
-    "none": "und",
-    "yue": "zh-yue",
-    "yue-Hant": "zh-yue-Hant",
-    "yue-Hans": "zh-yue-Hans"
-}
 TERRITORY_MAP = {
     "Hong Kong SAR China": "Hong Kong"
 }
diff --git a/devine/core/tracks/tracks.py b/devine/core/tracks/tracks.py
index d96804c..108dcf7 100644
--- a/devine/core/tracks/tracks.py
+++ b/devine/core/tracks/tracks.py
@@ -13,7 +13,7 @@ from rich.tree import Tree
 
 from devine.core.config import config
 from devine.core.console import console
-from devine.core.constants import LANGUAGE_MAX_DISTANCE, LANGUAGE_MUX_MAP, AnyTrack, TrackT
+from devine.core.constants import LANGUAGE_MAX_DISTANCE, AnyTrack, TrackT
 from devine.core.tracks.audio import Audio
 from devine.core.tracks.chapters import Chapter, Chapters
 from devine.core.tracks.subtitle import Subtitle
@@ -306,9 +306,7 @@ class Tracks:
             if callable(vt.OnMultiplex):
                 vt.OnMultiplex()
             cl.extend([
-                "--language", "0:{}".format(LANGUAGE_MUX_MAP.get(
-                    str(vt.language), str(vt.language)
-                )),
+                "--language", f"0:{vt.language}",
                 "--default-track", f"0:{i == 0}",
                 "--original-flag", f"0:{vt.is_original_lang}",
                 "--compression", "0:none",  # disable extra compression
@@ -322,9 +320,7 @@ class Tracks:
                 at.OnMultiplex()
             cl.extend([
                 "--track-name", f"0:{at.get_track_name() or ''}",
-                "--language", "0:{}".format(LANGUAGE_MUX_MAP.get(
-                    str(at.language), str(at.language)
-                )),
+                "--language", f"0:{at.language}",
                 "--default-track", f"0:{i == 0}",
                 "--visual-impaired-flag", f"0:{at.descriptive}",
                 "--original-flag", f"0:{at.is_original_lang}",
@@ -340,9 +336,7 @@ class Tracks:
             default = bool(self.audio and is_close_match(st.language, [self.audio[0].language]) and st.forced)
             cl.extend([
                 "--track-name", f"0:{st.get_track_name() or ''}",
-                "--language", "0:{}".format(LANGUAGE_MUX_MAP.get(
-                    str(st.language), str(st.language)
-                )),
+                "--language", f"0:{st.language}",
                 "--sub-charset", "0:UTF-8",
                 "--forced-track", f"0:{st.forced}",
                 "--default-track", f"0:{default}",