diff --git a/lib/Net/Amazon/S3/Client/Object.pm b/lib/Net/Amazon/S3/Client/Object.pm
index d10cba7..3d70d33 100755
--- lib/Net/Amazon/S3/Client/Object.pm
+++ lib/Net/Amazon/S3/Client/Object.pm
@@ -13,7 +13,7 @@ use IO::File 1.14;
 # ABSTRACT: An easy-to-use Amazon S3 client object
 
 enum 'AclShort' =>
-    qw(private public-read public-read-write authenticated-read);
+    [ qw(private public-read public-read-write authenticated-read) ];
 
 has 'client' =>
     ( is => 'ro', isa => 'Net::Amazon::S3::Client', required => 1 );
diff --git a/lib/Net/Amazon/S3/HTTPRequest.pm b/lib/Net/Amazon/S3/HTTPRequest.pm
index 69c6327..eeb9584 100755
--- lib/Net/Amazon/S3/HTTPRequest.pm
+++ lib/Net/Amazon/S3/HTTPRequest.pm
@@ -13,7 +13,7 @@ use URI;
 my $METADATA_PREFIX      = 'x-amz-meta-';
 my $AMAZON_HEADER_PREFIX = 'x-amz-';
 
-enum 'HTTPMethod' => qw(DELETE GET HEAD PUT POST);
+enum 'HTTPMethod' => [ qw(DELETE GET HEAD PUT POST) ];
 
 has 's3'     => ( is => 'ro', isa => 'Net::Amazon::S3', required => 1 );
 has 'method' => ( is => 'ro', isa => 'HTTPMethod',      required => 1 );
diff --git a/lib/Net/Amazon/S3/Request.pm b/lib/Net/Amazon/S3/Request.pm
index 9dded27..0415880 100644
--- lib/Net/Amazon/S3/Request.pm
+++ lib/Net/Amazon/S3/Request.pm
@@ -7,8 +7,8 @@ use Regexp::Common qw /net/;
 # ABSTRACT: Base class for request objects
 
 enum 'AclShort' =>
-    qw(private public-read public-read-write authenticated-read);
-enum 'LocationConstraint' => ( 'US', 'EU' );
+    [ qw(private public-read public-read-write authenticated-read) ];
+enum 'LocationConstraint' => [ 'US', 'EU' ];
 
 # To comply with Amazon S3 requirements, bucket names must:
 # Contain lowercase letters, numbers, periods (.), underscores (_), and dashes (-)