diff --git a/SeedDMS_Core/Core/inc.FileUtils.php b/SeedDMS_Core/Core/inc.FileUtils.php
index b3da438eb..04dc79ae2 100644
--- a/SeedDMS_Core/Core/inc.FileUtils.php
+++ b/SeedDMS_Core/Core/inc.FileUtils.php
@@ -137,7 +137,7 @@ class SeedDMS_Core_File {
 		case "image/png":
 		case "image/gif":
 		case "image/jpg":
-			$expect = substr($this->_mimeType, -3, 3);
+			$expect = substr($mimetype, -3, 3);
 			break;
 		default:
 			$mime_map = [
diff --git a/SeedDMS_Core/package.xml b/SeedDMS_Core/package.xml
index 2f3b585b9..28e97ae34 100644
--- a/SeedDMS_Core/package.xml
+++ b/SeedDMS_Core/package.xml
@@ -25,6 +25,7 @@
  <license uri="http://opensource.org/licenses/gpl-license">GPL License</license>
  <notes>
 - fix SeedDMS_Core_User::getDocumentContents()
+- fix SeedDMS_Core_File::fileExtension()
  </notes>
  <contents>
   <dir baseinstalldir="SeedDMS" name="/">