diff --git a/catalog.py b/catalog.py
index 12ce4c1..a096d34 100644
--- a/catalog.py
+++ b/catalog.py
@@ -4,17 +4,21 @@ import tarfile
 
 import package
 
+CATALOG = '.files'
 FILES = 'files'
 PACKAGE = 'desc'
 
 
 class Catalog:
-    def __init__(self, binary):
-        self.binary = binary
+    def __init__(self, subsystem):
+        self.subsystem = subsystem
+        self.path = os.path.join(self.subsystem.path,
+                                 f'{self.subsystem.name}{CATALOG}')
         self.load()
 
     def load(self):
-        f = io.BytesIO(self.binary)
+        binary = self.subsystem.architecture.repository.get_file(self.path)
+        f = io.BytesIO(binary)
         archive = tarfile.open(fileobj=f)
         m = {}
         packages = {}
diff --git a/local.py b/local.py
index 2a53b80..d1af64f 100644
--- a/local.py
+++ b/local.py
@@ -10,6 +10,10 @@ class Local(repository.Repository):
         super().__init__(arguments.directory)
         self.temporary = arguments.temporary
 
+    def get_file(self, path):
+        with open(os.path.join(self.location, path), 'br') as f:
+            return f.read()
+
     def get_files(self, path):
         *_, files = next(os.walk(os.path.join(self.location, path)))
         return files
diff --git a/msys.py b/msys.py
index 87eb923..b93f9a4 100644
--- a/msys.py
+++ b/msys.py
@@ -1,3 +1,2 @@
-CATALOG = '.files'
 CHARSET = 'u8'
 REPOSITORY = 'https://repo.msys2.org'
diff --git a/remote.py b/remote.py
index 71ae923..2939717 100644
--- a/remote.py
+++ b/remote.py
@@ -2,33 +2,16 @@ import os
 import requests
 
 import arguments
-import catalog
 import hypertext
-import msys
 import repository
 
 
 class Remote(repository.Repository):
     def __init__(self):
         super().__init__(arguments.remote)
-        self.load()
 
-    def load(self):
-        archives = {}
-        c = {}
-        for architecture in self.architectures:
-            subsystems = architecture.subsystems.keys()
-            #
-            c[architecture] = {}
-            for subsystem in subsystems:
-                location = os.path.join(self.location,
-                                        architecture.subsystems[subsystem]
-                                        .path,
-                                        f'{subsystem}{msys.CATALOG}')
-                binary = requests.get(location).content
-                c[architecture][subsystem] = catalog.Catalog(binary)
-        self.archives = archives
-        self.catalogs = c
+    def get_file(self, path):
+        return requests.get(os.path.join(self.location, path)).content
 
     def get_files(self, path):
         return hypertext.HyperText(os.path.join(self.location, path)).links
@@ -36,11 +19,5 @@ class Remote(repository.Repository):
     def __str__(self):
         lines = [
             super().__str__(),
-            'Archives:',
         ]
-        for architecture, archive in reversed(sorted(self.archives.items())):
-            lines.append(f'{architecture} → {archive}')
-        lines.append('Subsystems:')
-        for arch, ss in reversed(sorted(self.catalogs.items())):
-            lines.append(f'{arch} → {list(ss.keys())}')
         return os.linesep.join(lines)
diff --git a/subsystem.py b/subsystem.py
index cae4ed0..765c344 100644
--- a/subsystem.py
+++ b/subsystem.py
@@ -1,5 +1,7 @@
 import os
 
+import catalog
+
 CRT = 'mingw'
 MAIN = 'msys'
 
@@ -18,6 +20,8 @@ class SubSystem:
         if self.name == MAIN:
             list.append(self.architecture.name)
         self.path = os.sep.join(list)
+        # catalog
+        self.catalog = catalog.Catalog(self)
 
     def __str__(self):
         lines = [
diff --git a/synchronization.py b/synchronization.py
index c4fa2b8..9e28832 100644
--- a/synchronization.py
+++ b/synchronization.py
@@ -16,15 +16,13 @@ class Synchronization:
 
     def run(self):
         for architecture in self.remote.architectures:
-            for subsystem in architecture.subsystems.keys():
-                catalog = self.remote.catalogs[architecture][subsystem]
-                path = architecture.subsystems[subsystem].path
-                for _, package in sorted(catalog.packages.items()):
+            for subsystem in architecture.subsystems.values():
+                for _, package in sorted(subsystem.catalog.packages.items()):
                     f = file.File(
-                        os.path.join(self.remote.location, path),
+                        os.path.join(self.remote.location, subsystem.path),
                         package.name,
                         package.csize,
-                        os.path.join(self.repository.location, path),
+                        os.path.join(self.repository.location, subsystem.path),
                         package.sha256sum,
                     )
                     print()
@@ -37,8 +35,10 @@ class Synchronization:
 
     def __str__(self):
         lines = [
-            str(self.remote), str(),
-            str(self.repository), str(),
+            str(self.remote),
+            str(),
+            str(self.repository),
+            str(),
             f'Temporary: {self.temporary}',
         ]
         return os.linesep.join(lines)