diff --git a/archinstall/lib/disk/device_model.py b/archinstall/lib/disk/device_model.py
index 0eb40de017..6869b668a9 100644
--- a/archinstall/lib/disk/device_model.py
+++ b/archinstall/lib/disk/device_model.py
@@ -1345,7 +1345,7 @@ def json(self) -> Dict[str, Any]:
 			'fsavail': self.fsavail,
 			'fsuse_percentage': self.fsuse_percentage,
 			'type': self.type,
-			'mountpoint': self.mountpoint,
+			'mountpoint': str(self.mountpoint) if self.mountpoint else None,
 			'mountpoints': [str(m) for m in self.mountpoints],
 			'fsroots': [str(r) for r in self.fsroots],
 			'children': [c.json() for c in self.children]
@@ -1393,6 +1393,8 @@ def from_json(cls, blockdevice: Dict[str, Any]) -> LsblkInfo:
 
 		lsblk_info.children = [LsblkInfo.from_json(child) for child in blockdevice.get('children', [])]
 
+		lsblk_info.mountpoint = Path(lsblk_info.mountpoint) if lsblk_info.mountpoint else None
+
 		# sometimes lsblk returns 'mountpoints': [null]
 		lsblk_info.mountpoints = [Path(mnt) for mnt in lsblk_info.mountpoints if mnt]