diff --git a/html/user/host_app_versions.php b/html/user/host_app_versions.php
index 48598e9546..1a4ab62bd7 100644
--- a/html/user/host_app_versions.php
+++ b/html/user/host_app_versions.php
@@ -18,8 +18,6 @@
 
 require_once("../inc/util.inc");
 
-check_get_args(array("hostid"));
-
 function rsc_name($t) {
     switch ($t) {
     case 2: return tra("CPU");
@@ -30,11 +28,16 @@ function rsc_name($t) {
     return tra("Unknown");
 }
 
-function av_desc($gavid) {
+function av_desc($gavid, $show_dep) {
     if ($gavid >= 1000000) {
+        // anonymous platform
+        //
         $appid = (int)($gavid/1000000);
         $app = BoincApp::lookup_id($appid);
-        if (!$app || $app->deprecated) {
+        if (!$app) {
+            return null;
+        }
+        if (!$show_dep && $app->deprecated) {
             return null;
         }
         $rsc_type = $gavid % 1000000;
@@ -42,11 +45,17 @@ function av_desc($gavid) {
         return "$app->user_friendly_name (".tra("anonymous platform").", $r)";
     } else {
         $av = BoincAppVersion::lookup_id($gavid);
-        if (!$av || $av->deprecated) {
+        if (!$av) {
+            return null;
+        }
+        if (!$show_dep && $av->deprecated) {
             return null;
         }
         $app = BoincApp::lookup_id($av->appid);
-        if (!$app || $app->deprecated) {
+        if (!$app) {
+            return null;
+        }
+        if (!$show_dep && $app->deprecated) {
             return null;
         }
         $platform = BoincPlatform::lookup_id($av->platformid);
@@ -57,8 +66,8 @@ function av_desc($gavid) {
     }
 }
 
-function show_hav($hav) {
-    $desc = av_desc($hav->app_version_id);
+function show_hav($hav, $show_dep) {
+    $desc = av_desc($hav->app_version_id, $show_dep);
     if (!$desc) return;
     row1($desc);
     row2(tra("Number of tasks completed"), $hav->et_n);
@@ -74,6 +83,7 @@ function show_hav($hav) {
 }
 
 $hostid = get_int('hostid');
+$show_dep = get_int('show_dep', true);
 
 $havs = BoincHostAppVersion::enum("host_id=$hostid");
 
@@ -81,9 +91,14 @@ page_head(tra("Application details for host %1", $hostid));
 start_table();
 foreach ($havs as $hav) {
     //if (!$hav->pfc_n) continue;
-    show_hav($hav);
+    show_hav($hav, $show_dep);
 }
 end_table();
+if ($show_dep) {
+    show_button("host_app_versions.php?hostid=$hostid", "Show active versions");
+} else {
+    show_button("host_app_versions.php?hostid=$hostid&show_dep=1", "Show all versions");
+}
 
 page_tail();
 ?>