diff --git a/_pytest/hookspec.py b/_pytest/hookspec.py
index 1fdc2456e..e5c966e58 100644
--- a/_pytest/hookspec.py
+++ b/_pytest/hookspec.py
@@ -353,7 +353,7 @@ def pytest_report_header(config, startdir):
 def pytest_report_collectionfinish(config, startdir, items):
     """
     .. versionadded:: 3.2
-    
+
     return a string or list of strings to be displayed after collection has finished successfully.
 
     This strings will be displayed after the standard "collected X items" message.