diff --git a/python/letsql/common/utils/dask_normalize_expr.py b/python/letsql/common/utils/dask_normalize_expr.py
index d3d4068a..ac10d2df 100644
--- a/python/letsql/common/utils/dask_normalize_expr.py
+++ b/python/letsql/common/utils/dask_normalize_expr.py
@@ -3,6 +3,7 @@
 import dask
 import ibis
 import ibis.expr.operations.relations as ir
+import sqlglot as sg
 
 from letsql.expr.relations import (
     make_native_op,
@@ -111,7 +112,10 @@ def normalize_snowflake_databasetable(dt):
 def normalize_duckdb_databasetable(dt):
     if dt.source.name != "duckdb":
         raise ValueError
-    ((_, plan),) = dt.source.raw_sql(f"EXPLAIN SELECT * FROM {dt.name}").fetchall()
+    name = sg.table(dt.name, quoted=dt.source.compiler.quoted).sql(
+        dialect=dt.source.name
+    )
+    ((_, plan),) = dt.source.raw_sql(f"EXPLAIN SELECT * FROM {name}").fetchall()
     scan_line = plan.split("\n")[1]
     execution_plan_name = r"\s*│\s*(\w+)\s*│\s*"
     match re.match(execution_plan_name, scan_line).group(1):
@@ -124,8 +128,9 @@ def normalize_duckdb_databasetable(dt):
 
 
 def normalize_duckdb_file_read(dt):
+    name = sg.exp.convert(dt.name).sql(dialect=dt.source.name)
     (sql_ddl_statement,) = dt.source.con.sql(
-        f"select sql from duckdb_views() where view_name = '{dt.name}'"
+        f"select sql from duckdb_views() where view_name = {name}"
     ).fetchone()
     return dask.base._normalize_seq_func(
         (
diff --git a/python/letsql/common/utils/tests/test_dask_normalize.py b/python/letsql/common/utils/tests/test_dask_normalize.py
index c1beaaa0..d70ee0b4 100644
--- a/python/letsql/common/utils/tests/test_dask_normalize.py
+++ b/python/letsql/common/utils/tests/test_dask_normalize.py
@@ -54,3 +54,11 @@ def test_tokenize_pandas_expr(alltypes_df):
     actual = dask.base.tokenize(t)
     expected = "7b0019049171a3ef78ecbd5f463ac728"
     assert actual == expected
+
+
+def test_tokenize_duckdb_dt(batting):
+    db_con = ibis.duckdb.connect()
+    t = db_con.register(batting.to_pyarrow(), "dashed-name")
+    actual = dask.base.tokenize(t)
+    expected = "e5d0040b184eaa719ebb5dc0efff3cc7"
+    assert actual == expected