diff --git a/src/Module/WPDb.php b/src/Module/WPDb.php
index 88b1ca9cf..2ade5db7f 100644
--- a/src/Module/WPDb.php
+++ b/src/Module/WPDb.php
@@ -3405,8 +3405,11 @@ protected function scaffoldBlogTables(int $blogId, string $domainOrPath, bool $i
     protected function getWpFilesystemModule(): WPFilesystem
     {
         try {
+            // Support both a prefixed and not prefixed module name.
             /** @var WPFilesystem $fs */
-            $fs = $this->getModule('\\' . WPFilesystem::class);
+            $fs = $this->hasModule('\\' . WPFilesystem::class)
+                ? $this->getModule('\\' . WPFilesystem::class)
+                : $this->getModule(WPFilesystem::class);
 
             return $fs;
         } catch (ModuleException) {