diff --git a/fastapi/security/http.py b/fastapi/security/http.py
index 17273d91e..138e79074 100644
--- a/fastapi/security/http.py
+++ b/fastapi/security/http.py
@@ -182,10 +182,10 @@ class HTTPBasic(HTTPBase):
             str,
             Doc(
                 """
-                The text to be returned to the client when `auto_error` 
+                The text to be returned to the client when `auto_error`
                 raises an HTTP exception.
 
-                It useful when you have multiple errors defined: set 
+                It useful when you have multiple errors defined: set
                 different detail text to easily differentiate which error was raised.
                 """
             ),
@@ -310,10 +310,10 @@ class HTTPBearer(HTTPBase):
             str,
             Doc(
                 """
-                The text to be returned to the client when `auto_error` 
+                The text to be returned to the client when `auto_error`
                 raises an HTTP exception.
 
-                It useful when you have multiple errors defined: set 
+                It useful when you have multiple errors defined: set
                 different detail text to easily differentiate which error was raised.
                 """
             ),
@@ -426,10 +426,10 @@ class HTTPDigest(HTTPBase):
             str,
             Doc(
                 """
-                The text to be returned to the client when `auto_error` 
+                The text to be returned to the client when `auto_error`
                 raises an HTTP exception.
 
-                It useful when you have multiple errors defined: set 
+                It useful when you have multiple errors defined: set
                 different detail text to easily differentiate which error was raised.
                 """
             ),