diff --git a/tests/components/alarmdecoder/__init__.py b/tests/components/alarmdecoder/__init__.py
new file mode 100644
index 00000000000..acfe3195aad
--- /dev/null
+++ b/tests/components/alarmdecoder/__init__.py
@@ -0,0 +1 @@
+"""The tests for AlarmDecoder integration."""