diff --git a/pmb/install/install.py b/pmb/install/install.py
index 72a249bf..e93caeac 100644
--- a/pmb/install/install.py
+++ b/pmb/install/install.py
@@ -62,6 +62,7 @@ def get_subpartitions_size(args):
     # Add some free space, see also:
     # https://github.com/postmarketOS/pmbootstrap/pull/336
     full *= 1.20
+    full += 50 * 1024 * 1024
     boot += 15 * 1024 * 1024
     return (full, boot)