diff --git a/Lib/email/_policybase.py b/Lib/email/_policybase.py
index f4140fd67e4332..12211158f4699b 100644
--- a/Lib/email/_policybase.py
+++ b/Lib/email/_policybase.py
@@ -90,7 +90,7 @@ def __add__(self, other):
         """
         return self.clone(**other.__dict__)
 
-def validate_header(name, value):
+def validate_header(name):
     # Validate header name according to RFC 5322
     import re
     if not re.match(r'^[^\s:]+$', name):
@@ -322,7 +322,7 @@ def header_store_parse(self, name, value):
         """+
         The name and value are returned unmodified.
         """
-        validate_header(name, value)
+        validate_header(name)
         return (name, value)
 
     def header_fetch_parse(self, name, value):
diff --git a/Lib/email/policy.py b/Lib/email/policy.py
index 88fe13e56cdde3..48e6b2340e2c61 100644
--- a/Lib/email/policy.py
+++ b/Lib/email/policy.py
@@ -140,7 +140,7 @@ def header_store_parse(self, name, value):
         """
         if hasattr(value, 'name') and value.name.lower() == name.lower():
             return (name, value)
-        validate_header(name, value)
+        validate_header(name)
         if isinstance(value, str) and len(value.splitlines())>1:
             # XXX this error message isn't quite right when we use splitlines
             # (see issue 22233), but I'm not sure what should happen here.