src/ForwardCompatibility/FileFieldUploader.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ForwardCompatibility/FileFieldUploader.php b/src/ForwardCompatibility/FileFieldUploader.php
index 016ca09..4addc74 100644
--- a/src/ForwardCompatibility/FileFieldUploader.php
+++ b/src/ForwardCompatibility/FileFieldUploader.php
@@ -220,7 +220,7 @@ class FileFieldUploader {
    * @throws \Symfony\Component\HttpKernel\Exception\BadRequestHttpException
    *   Thrown when the 'Content-Disposition' request header is invalid.
    */
-  public function validateAndParseContentDispositionHeader(Request $request) {
+  public static function validateAndParseContentDispositionHeader(Request $request) {
     // First, check the header exists.
     if (!$request->headers->has('content-disposition')) {
       throw new BadRequestHttpException('"Content-Disposition" header is required. A file name in the format "filename=FILENAME" must be provided.');