diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 00000000..adfa6fae
--- /dev/null
+++ b/tests/__init__.py
@@ -0,0 +1 @@
+"""Tests modules."""
diff --git a/zha/__init__.py b/zha/__init__.py
new file mode 100644
index 00000000..280b81d0
--- /dev/null
+++ b/zha/__init__.py
@@ -0,0 +1 @@
+"""zigbee home automation."""