diff --git a/platformio/package/manifest/schema.py b/platformio/package/manifest/schema.py
index faa61d36..a3d940ee 100644
--- a/platformio/package/manifest/schema.py
+++ b/platformio/package/manifest/schema.py
@@ -143,7 +143,8 @@ class ExampleSchema(StrictSchema):
         validate=[
             validate.Length(min=1, max=255),
             validate.Regexp(
-                r"^[a-zA-Z\d\-\_/\. ]+$", error="Only [a-zA-Z0-9-_/. ] chars are allowed"
+                r"^[a-zA-Z\d\-\_/\. ]+$",
+                error="Only [a-zA-Z0-9-_/. ] chars are allowed",
             ),
         ],
     )