diff --git a/toolkit/mozapps/update/UpdateService.sys.mjs b/toolkit/mozapps/update/UpdateService.sys.mjs
index e6b5b74624473..0e35db58c4bdd 100644
--- a/toolkit/mozapps/update/UpdateService.sys.mjs
+++ b/toolkit/mozapps/update/UpdateService.sys.mjs
@@ -579,7 +579,7 @@ function areDirectoryEntriesWriteable(aDir) {
   let items = aDir.directoryEntries;
   while (items.hasMoreElements()) {
     let item = items.nextFile;
-    if (!item.isWritable()) {
+    if (item && item.exists() && !item.isWritable()) {
       LOG("areDirectoryEntriesWriteable - unable to write to " + item.path);
       return false;
     }
diff --git a/toolkit/mozapps/update/tests/marionette/manifest.toml b/toolkit/mozapps/update/tests/marionette/manifest.toml
index d7c90399d5c74..a199341e41356 100644
--- a/toolkit/mozapps/update/tests/marionette/manifest.toml
+++ b/toolkit/mozapps/update/tests/marionette/manifest.toml
@@ -4,6 +4,6 @@ tags = "os_integration"
 
 ["test_no_window_update_restart.py"]
 run-if = [
-  "os == 'mac' && !enterprise", # Bug 2019348 - Test is failing and there is a "profile missing" window visible
+  "os == 'mac'"
 ]
 reason = "Test of a mac only feature"