diff --git a/emhttp/plugins/dynamix.vm.manager/include/libvirt.php b/emhttp/plugins/dynamix.vm.manager/include/libvirt.php
index c7d28a9f9..dac17f208 100644
--- a/emhttp/plugins/dynamix.vm.manager/include/libvirt.php
+++ b/emhttp/plugins/dynamix.vm.manager/include/libvirt.php
@@ -1359,7 +1359,7 @@
 					$this->_set_last_error();
 
 					$ret[] = [
-						'device' => $disk->target->attributes()->dev,
+						'device' => $disk->target->attributes()->dev->__toString(),
 						'file'   => $disk->source->attributes()->file,
 						'type'   => '-',
 						'capacity' => '-',