diff --git a/CHANGELOG.md b/CHANGELOG.md
index 69fbaab5..ac3e91c5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
     * Removed duplicate lang strings
 1. [](#bugfix)
     * Fix XSS checking when empty content [#1533](https://github.com/getgrav/grav-plugin-admin/issues/1533)
+    * Fix DirectInstall not working [#1535](https://github.com/getgrav/grav-plugin-admin/issues/1535)
 
 # v1.8.11
 ## 10/08/2018
diff --git a/classes/admincontroller.php b/classes/admincontroller.php
index fb30ddb9..4e0932e2 100644
--- a/classes/admincontroller.php
+++ b/classes/admincontroller.php
@@ -2288,7 +2288,7 @@ class AdminController extends AdminBaseController
             $file_path = $_FILES['uploaded_file']['tmp_name'];
 
             // Handle bad filenames.
-            if (!Utils::checkFilename($file_path)) {
+            if (!Utils::checkFilename(basename($file_path))) {
                 $this->admin->json_response = [
                     'status'  => 'error',
                     'message' => $this->admin->translate('PLUGIN_ADMIN.UNKNOWN_ERRORS')