diff --git a/cmd/pkgserver/ui/static/index.ts b/cmd/pkgserver/ui/static/index.ts
index 18bbbfa..453964f 100644
--- a/cmd/pkgserver/ui/static/index.ts
+++ b/cmd/pkgserver/ui/static/index.ts
@@ -7,10 +7,10 @@ class PackageIndexEntry {
     report:  boolean
 }
 function toHTML(entry: PackageIndexEntry): HTMLTableRowElement {
-    let v = entry.version !== null ? `<span>${escapeHtml(entry.version)}</span>` : ""
-    let s = entry.size !== null ? `<p>Size: ${toByteSizeString(entry.size)} (${entry.size})</p>` : ""
-    let d = entry.description !== null ? `<p>${escapeHtml(entry.description)}</p>` : ""
-    let w = entry.website !== null ? `<a href="${encodeURI(entry.website)}">Website</a>` : ""
+    let v = entry.version != null ? `<span>${escapeHtml(entry.version)}</span>` : ""
+    let s = entry.size != null ? `<p>Size: ${toByteSizeString(entry.size)} (${entry.size})</p>` : ""
+    let d = entry.description != null ? `<p>${escapeHtml(entry.description)}</p>` : ""
+    let w = entry.website != null ? `<a href="${encodeURI(entry.website)}">Website</a>` : ""
     let r = entry.report ? `Log (<a href=\"${encodeURI('/api/v1/status/' + entry.name)}\">View</a> | <a href=\"${encodeURI('/status/' + entry.name)}\">Download</a>)` : ""
     let row = <HTMLTableRowElement>(document.createElement('tr'))
     row.innerHTML = `<td>
@@ -24,7 +24,7 @@ function toHTML(entry: PackageIndexEntry): HTMLTableRowElement {
 }
 
 function toByteSizeString(bytes: number): string {
-    if(bytes < 1024) return `${bytes}B`
+    if(bytes == null || bytes < 1024) return `${bytes}B`
     if(bytes < Math.pow(1024, 2)) return `${(bytes/1024).toFixed(2)}kiB`
     if(bytes < Math.pow(1024, 3)) return `${(bytes/Math.pow(1024, 2)).toFixed(2)}MiB`
     if(bytes < Math.pow(1024, 4)) return `${(bytes/Math.pow(1024, 3)).toFixed(2)}GiB`
@@ -50,7 +50,7 @@ class GetPayload {
 }
 
 enum SortOrders {
-    DeclarationAscending = 0,
+    DeclarationAscending,
     DeclarationDescending,
     NameAscending,
     NameDescending
@@ -128,6 +128,7 @@ function nextPage() {
 }
 
 function escapeHtml(str: string): string {
+    if(str === undefined) return ""
     return str
         .replace(/&/g, '&amp;')
         .replace(/</g, '&lt;')