diff --git a/Makefile b/Makefile
index 2fa2dbd..598e6ff 100644
--- a/Makefile
+++ b/Makefile
@@ -39,3 +39,11 @@ yamllint:
 .PHONY: package
 package:
 	(umask 0022; python -m build; python -m twine check --strict ./dist/*)
+
+.PHONY: check-typos
+check-typos:
+	typos
+
+.PHONY: fix-typos
+fix-typos:
+	typos -w
diff --git a/_typos.toml b/_typos.toml
new file mode 100644
index 0000000..a8284dc
--- /dev/null
+++ b/_typos.toml
@@ -0,0 +1,2 @@
+[files]
+extend-exclude = ["_introspect.py"]
diff --git a/src/dbus_python_client_gen/_invokers.py b/src/dbus_python_client_gen/_invokers.py
index 796962e..c2534c2 100644
--- a/src/dbus_python_client_gen/_invokers.py
+++ b/src/dbus_python_client_gen/_invokers.py
@@ -48,7 +48,7 @@ def prop_builder(  # noqa: PLR0915
     :param str interface_name: the interface to which these properties belong
     :param properties: iterable of interface specifications for each property
     :type properties: iterable of xml.element.ElementTree.Element
-    :param int defaul_timeout: the D-Bus timeout, -1 is the libdbus default ~25s
+    :param int default_timeout: the D-Bus timeout, -1 is the libdbus default ~25s
 
     :raises DPClientGenerationError:
     """