diff --git a/app/ExternalLink/AttachmentLinkProvider.php b/app/ExternalLink/AttachmentLinkProvider.php
index 706ac1dd4..60416459b 100644
--- a/app/ExternalLink/AttachmentLinkProvider.php
+++ b/app/ExternalLink/AttachmentLinkProvider.php
@@ -74,7 +74,7 @@ class AttachmentLinkProvider extends BaseLinkProvider implements ExternalLinkPro
      */
     public function match()
     {
-        if (preg_match('/^https?:\/\/.*\.([^\/]+)$/', $this->userInput, $matches)) {
+        if (preg_match('/^https?:\/\/.*\/.*\.([^\/]+)$/', $this->userInput, $matches)) {
             return $this->isValidExtension($matches[1]);
         }
 
diff --git a/tests/units/ExternalLink/AttachmentLinkProviderTest.php b/tests/units/ExternalLink/AttachmentLinkProviderTest.php
index 531907d78..917174d8a 100644
--- a/tests/units/ExternalLink/AttachmentLinkProviderTest.php
+++ b/tests/units/ExternalLink/AttachmentLinkProviderTest.php
@@ -40,6 +40,9 @@ class AttachmentLinkProviderTest extends Base
         $attachmentLinkProvider->setUserTextInput('  https://kanboard.org/folder/archive.tar ');
         $this->assertTrue($attachmentLinkProvider->match());
 
+        $attachmentLinkProvider->setUserTextInput('https://www.github.io/folder/archive.zip');
+        $this->assertTrue($attachmentLinkProvider->match());
+
         $attachmentLinkProvider->setUserTextInput('http:// invalid url');
         $this->assertFalse($attachmentLinkProvider->match());
 
@@ -54,6 +57,12 @@ class AttachmentLinkProviderTest extends Base
 
         $attachmentLinkProvider->setUserTextInput('https://kanboard.org/folder/document.do');
         $this->assertFalse($attachmentLinkProvider->match());
+
+        $attachmentLinkProvider->setUserTextInput('https://www.github.io/folder/document.html');
+        $this->assertFalse($attachmentLinkProvider->match());
+
+        $attachmentLinkProvider->setUserTextInput('https://www.github.io');
+        $this->assertFalse($attachmentLinkProvider->match());
     }
 
     public function testGetLink()