diff --git a/toolkit/components/downloads/test/unit/test_download_manager.js b/toolkit/components/downloads/test/unit/test_download_manager.js
index 1a72e2b906a..b673c4db990 100644
--- a/toolkit/components/downloads/test/unit/test_download_manager.js
+++ b/toolkit/components/downloads/test/unit/test_download_manager.js
@@ -46,7 +46,8 @@ function cleanup()
   // removing database
   var dbFile = dirSvc.get("ProfD", Ci.nsIFile);
   dbFile.append("downloads.sqlite");
-  if (dbFile.exists()) dbFile.remove(true);
+  if (dbFile.exists())
+    try { dbFile.remove(true); } catch(e) { /* stupid windows box */ }
 
   // removing downloaded file
   var destFile = dirSvc.get("ProfD", Ci.nsIFile);
diff --git a/toolkit/components/downloads/test/unit/test_download_manager_migration.js b/toolkit/components/downloads/test/unit/test_download_manager_migration.js
index feae577a520..ec16746f742 100644
--- a/toolkit/components/downloads/test/unit/test_download_manager_migration.js
+++ b/toolkit/components/downloads/test/unit/test_download_manager_migration.js
@@ -48,7 +48,8 @@ function cleanup()
   // removing database
   var dbFile = dirSvc.get("ProfD", Ci.nsIFile);
   dbFile.append("downloads.sqlite");
-  if (dbFile.exists()) dbFile.remove(true);
+  if (dbFile.exists())
+    try { dbFile.remove(true); } catch(e) { /* stupid windows box */ }
 }
 
 cleanup();