diff --git a/tests/test_error.py b/tests/test_error.py
index 44f7797..d2d982c 100644
--- a/tests/test_error.py
+++ b/tests/test_error.py
@@ -31,3 +31,7 @@ def test_invalid_char_quotes():
     with pytest.raises(tomli.TOMLDecodeError) as exc_info:
         tomli.loads("v = '\n'")
     assert " '\\n' " in str(exc_info.value)
+
+
+def test_module_name():
+    assert tomli.TOMLDecodeError().__module__ == "tomli"
diff --git a/tomli/__init__.py b/tomli/__init__.py
index d99eadc..7061912 100644
--- a/tomli/__init__.py
+++ b/tomli/__init__.py
@@ -4,3 +4,6 @@
 __version__ = "1.2.1"  # DO NOT EDIT THIS LINE MANUALLY. LET bump2version UTILITY DO IT
 
 from tomli._parser import TOMLDecodeError, load, loads
+
+# Pretend this exception was created here.
+TOMLDecodeError.__module__ = "tomli"