diff --git a/moto/applicationautoscaling/models.py b/moto/applicationautoscaling/models.py
index 22bdd0a4890c..426069f8cd8f 100644
--- a/moto/applicationautoscaling/models.py
+++ b/moto/applicationautoscaling/models.py
@@ -673,4 +673,6 @@ def update(
         self.end_time = end_time
 
 
-applicationautoscaling_backends = BackendDict(ApplicationAutoscalingBackend, "application-autoscaling")
+applicationautoscaling_backends = BackendDict(
+    ApplicationAutoscalingBackend, "application-autoscaling"
+)