diff --git a/js/AttachmentGrid.js b/js/AttachmentGrid.js
index aea526b..eaac638 100644
--- a/js/AttachmentGrid.js
+++ b/js/AttachmentGrid.js
@@ -90,7 +90,7 @@ Ext.define('PMG.grid.AttachmentGrid', {
 	},
 	{
 	    text: gettext('Size'),
-	    renderer: Proxmox.Utils.format_size,
+	    renderer: Proxmox.Utils.render_size,
 	    dataIndex: 'size',
 	    flex: 1,
 	},
diff --git a/js/BackupRestore.js b/js/BackupRestore.js
index 21a979f..8f1c4f4 100644
--- a/js/BackupRestore.js
+++ b/js/BackupRestore.js
@@ -183,7 +183,7 @@ Ext.define('PMG.BackupRestore', {
 	    header: gettext('Size'),
 	    width: 100,
 	    sortable: true,
-	    renderer: Proxmox.Utils.format_size,
+	    renderer: Proxmox.Utils.render_size,
 	    dataIndex: 'size',
 	},
 	{
diff --git a/js/PBSSnapshotView.js b/js/PBSSnapshotView.js
index c182bfb..9527220 100644
--- a/js/PBSSnapshotView.js
+++ b/js/PBSSnapshotView.js
@@ -267,7 +267,7 @@ Ext.define('PMG.PBSConfig', {
 		{
 		    text: 'Size',
 		    dataIndex: 'size',
-		    renderer: Proxmox.Utils.format_size,
+		    renderer: Proxmox.Utils.render_size,
 		    flex: 1,
 		},
 		{
diff --git a/js/PostfixMailQueue.js b/js/PostfixMailQueue.js
index 94ab186..8b4ee8c 100644
--- a/js/PostfixMailQueue.js
+++ b/js/PostfixMailQueue.js
@@ -147,7 +147,7 @@ Ext.define('PMG.Postfix.MailQueue', {
 	},
 	{
 	    header: 'Size',
-	    renderer: Proxmox.Utils.format_size,
+	    renderer: Proxmox.Utils.render_size,
 	    flex: 1,
 	    dataIndex: 'message_size',
 	},