diff --git a/app/dbtables.py b/app/dbtables.py
index 279c198..c2da638 100644
--- a/app/dbtables.py
+++ b/app/dbtables.py
@@ -142,7 +142,6 @@ class TracksTable(Model):
     duration: Mapped[int] = mapped_column(index=True)
     fade_at: Mapped[int] = mapped_column(index=False)
     intro: Mapped[Optional[int]] = mapped_column(default=None)
-    mtime: Mapped[float] = mapped_column(index=True)
     path: Mapped[str] = mapped_column(String(2048), index=False, unique=True)
     silence_at: Mapped[int] = mapped_column(index=False)
     start_gap: Mapped[int] = mapped_column(index=False)
diff --git a/app/helpers.py b/app/helpers.py
index 0cd263e..a250a23 100644
--- a/app/helpers.py
+++ b/app/helpers.py
@@ -346,7 +346,7 @@ def remove_substring_case_insensitive(parent_string: str, substring: str) -> str
         index = lower_parent.find(lower_substring)
 
         # Remove the substring
-        result = result[:index] + result[index + len(substring):]
+        result = result[:index] + result[index + len(substring) :]
 
         # Update the lowercase versions
         lower_parent = result.lower()
diff --git a/app/models.py b/app/models.py
index 79aac49..dc8e731 100644
--- a/app/models.py
+++ b/app/models.py
@@ -631,7 +631,6 @@ class Tracks(dbtables.TracksTable):
         start_gap: int,
         fade_at: int,
         silence_at: int,
-        mtime: int,
         bitrate: int,
     ):
         self.path = path
@@ -642,7 +641,6 @@ class Tracks(dbtables.TracksTable):
         self.start_gap = start_gap
         self.fade_at = fade_at
         self.silence_at = silence_at
-        self.mtime = mtime
 
         try:
             session.add(self)
diff --git a/migrations/versions/164bd5ef3074_remove_mtime_from_tracks.py b/migrations/versions/164bd5ef3074_remove_mtime_from_tracks.py
new file mode 100644
index 0000000..4348f8e
--- /dev/null
+++ b/migrations/versions/164bd5ef3074_remove_mtime_from_tracks.py
@@ -0,0 +1,46 @@
+"""Remove mtime from Tracks
+
+Revision ID: 164bd5ef3074
+Revises: a524796269fa
+Create Date: 2024-12-22 14:11:48.045995
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+# revision identifiers, used by Alembic.
+revision = '164bd5ef3074'
+down_revision = 'a524796269fa'
+branch_labels = None
+depends_on = None
+
+
+def upgrade(engine_name: str) -> None:
+    globals()["upgrade_%s" % engine_name]()
+
+
+def downgrade(engine_name: str) -> None:
+    globals()["downgrade_%s" % engine_name]()
+
+
+
+
+
+def upgrade_() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('tracks', schema=None) as batch_op:
+        batch_op.drop_index('ix_tracks_mtime')
+        batch_op.drop_column('mtime')
+
+    # ### end Alembic commands ###
+
+
+def downgrade_() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('tracks', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('mtime', mysql.FLOAT(), nullable=False))
+        batch_op.create_index('ix_tracks_mtime', ['mtime'], unique=False)
+
+    # ### end Alembic commands ###
+
diff --git a/tests/test_ui.py b/tests/test_ui.py
index d7cf1bf..e230def 100644
--- a/tests/test_ui.py
+++ b/tests/test_ui.py
@@ -63,7 +63,6 @@ class MyTestCase(unittest.TestCase):
                 "start_gap": 60,
                 "fade_at": 236263,
                 "silence_at": 260343,
-                "mtime": 371900000,
             },
             2: {
                 "path": "testdata/mom.mp3",
@@ -74,7 +73,6 @@ class MyTestCase(unittest.TestCase):
                 "start_gap": 70,
                 "fade_at": 115000,
                 "silence_at": 118000,
-                "mtime": 1642760000,
             },
         }