1 files changed, 2 insertions, 2 deletions
diff --git a/lib/Hash/Util.pm b/lib/Hash/Util.pm
index a1c9e64a54..f6dcd7e0a7 100644
--- a/lib/Hash/Util.pm
+++ b/lib/Hash/Util.pm
@@ -94,14 +94,14 @@ sub lock_keys (\%;@) {
         Internals::SvREADONLY %$hash, 1;
     }
 
-    return undef;
+    return;
 }
 
 sub unlock_keys (\%) {
     my($hash) = shift;
 
     Internals::SvREADONLY %$hash, 0;
-    return undef;
+    return;
 }
 
 =item lock_value