diff --git a/payphone/core/converters.py b/payphone/core/converters.py
index cf6ba66..6ac25fc 100644
--- a/payphone/core/converters.py
+++ b/payphone/core/converters.py
@@ -55,6 +55,11 @@ class DiscordUserID(converter.Converter):
         ):
             return int(argument.split("?", 1)[0].rsplit("/", 1)[1])
 
+        user = await models.User.get_or_none(username=argument)
+
+        if user is not None:
+            return user.id
+
         if argument.lower() in ["reply", "."]:
             if ctx.message.reference is not None:
                 ref = ctx.message.reference
@@ -73,7 +78,6 @@ class DiscordUserID(converter.Converter):
 
                     raise converter.BadArgument()
 
-                else:
-                    return msg.author.id
+                return msg.author.id
 
         raise converter.BadArgument()
diff --git a/payphone/db/migrations/models/8_20241018132301_update.py b/payphone/db/migrations/models/8_20241018132301_update.py
new file mode 100644
index 0000000..8509a17
--- /dev/null
+++ b/payphone/db/migrations/models/8_20241018132301_update.py
@@ -0,0 +1,11 @@
+from tortoise import BaseDBAsyncClient
+
+
+async def upgrade(db: BaseDBAsyncClient) -> str:
+    return """
+        CREATE INDEX "idx_user_usernam_9987ab" ON "user" ("username");"""
+
+
+async def downgrade(db: BaseDBAsyncClient) -> str:
+    return """
+        DROP INDEX "idx_user_usernam_9987ab";"""
diff --git a/payphone/db/models.py b/payphone/db/models.py
index 917d935..99eecc7 100644
--- a/payphone/db/models.py
+++ b/payphone/db/models.py
@@ -13,7 +13,7 @@ from payphone.core import config, constants
 
 class User(models.Model):
     id: int = fields.BigIntField(primary_key=True)
-    username: str = fields.CharField(max_length=32)
+    username: str = fields.CharField(max_length=32, db_index=True)
     is_masked: bool = fields.BooleanField(default=False)
     is_moderator: bool = fields.BooleanField(default=False)
     profiles: fields.BackwardFKRelation["Profile"]
@@ -21,9 +21,7 @@ class User(models.Model):
     leaderboard_position: int | None = fields.IntField(
         default=None, null=True, db_index=True
     )
-    leaderboard_calls_count: int | None = fields.IntField(
-        default=None, null=True
-    )
+    leaderboard_calls_count: int | None = fields.IntField(default=None, null=True)
     joined_at: datetime = fields.DatetimeField(auto_now_add=True)