diff --git a/platformio/commands/run.py b/platformio/commands/run.py
index 49d5e23f..4b8ec5b2 100644
--- a/platformio/commands/run.py
+++ b/platformio/commands/run.py
@@ -192,8 +192,7 @@ def _autoinstall_platform(ctx, platform, targets):
             cmd_options['with_package'] = ["uploader"]
 
     elif (platform in installed_platforms and
-          set(p.pkg_aliases_to_names(["toolchain"])) <=
-          set(p.get_installed_packages())):
+          set(p.get_default_packages()) <= set(p.get_installed_packages())):
         return
 
     if (not app.get_setting("enable_prompts") or
diff --git a/platformio/platforms/base.py b/platformio/platforms/base.py
index 7dd2732f..8874e7f3 100644
--- a/platformio/platforms/base.py
+++ b/platformio/platforms/base.py
@@ -242,6 +242,10 @@ class BasePlatform(object):
             names.append(name)
         return names
 
+    def get_default_packages(self):
+        return [k for k, v in self.get_packages().items()
+                if v.get("default", False)]
+
     def get_installed_packages(self):
         pm = PackageManager()
         return [n for n in self.get_packages().keys() if pm.is_installed(n)]