diff --git a/__main__.py b/__main__.py
index 47579ad..faea166 100755
--- a/__main__.py
+++ b/__main__.py
@@ -18,7 +18,7 @@ def check():
     broken = []
     lo = local.Local()
     for architecture in lo:
-        for subsystem in architecture.subsystems.values():
+        for subsystem in architecture:
             for package in subsystem.catalog.packages.values():
                 packages.append((subsystem, package))
     for index, items in enumerate(packages):
diff --git a/architecture.py b/architecture.py
index 25c74f0..78b9fb2 100644
--- a/architecture.py
+++ b/architecture.py
@@ -24,9 +24,13 @@ class Architecture:
                                      for f in arguments.subsystems]
                            if s in subsystems}
 
+    def __iter__(self):
+        return self.subsystems.values().__iter__()
+
     def __str__(self):
         lines = [
-            f'Name: {self.name}',
-            f'Bits: {self.bits}',
+            f'      Name: {self.name}',
+            f'      Bits: {self.bits}',
+            f'Subsystems: {subsystem.name for subsystem in self}',
         ]
         return os.linesep.join(lines)
diff --git a/synchronization.py b/synchronization.py
index 71e8690..9339efc 100644
--- a/synchronization.py
+++ b/synchronization.py
@@ -16,7 +16,7 @@ class Synchronization:
 
     def run(self):
         for architecture in self.remote:
-            for subsystem in architecture.subsystems.values():
+            for subsystem in architecture:
                 for _, package in sorted(subsystem.catalog.packages.items()):
                     f = file.File(
                         os.path.join(self.remote.location, subsystem.path),