diff --git a/coreos.json b/coreos.json
index 80ae4f3..5ebabe1 100644
--- a/coreos.json
+++ b/coreos.json
@@ -27,7 +27,7 @@
             "label": "root",
             "number": 4,
             "resize": true,
-            "sizeMiB": 32256
+            "sizeMiB": 30000
           },
           {
             "label": "swap",