diff --git a/inc/Service/Media/FallbackMediaHandler.php b/inc/Service/Media/FallbackMediaHandler.php
index dea6429c..31395089 100644
--- a/inc/Service/Media/FallbackMediaHandler.php
+++ b/inc/Service/Media/FallbackMediaHandler.php
@@ -53,7 +53,6 @@ class FallbackMediaHandler implements MediaHandler {
 		mixed $handle,
 		string $media_preferred_out_file_basepath,
 		string $thumb_preferred_out_file_basepath,
-		string $thumb_preferred_out_mime,
 		int $thumb_max_width,
 		int $thumb_max_height
 	): MediaInstallResult {
@@ -65,7 +64,6 @@ class FallbackMediaHandler implements MediaHandler {
 		$thumb = $this->generateThumb(
 			$handle,
 			$thumb_preferred_out_file_basepath,
-			$thumb_preferred_out_mime,
 			$thumb_max_width,
 			$thumb_max_height
 		);
@@ -75,7 +73,6 @@ class FallbackMediaHandler implements MediaHandler {
 	public function generateThumb(
 		mixed $handle,
 		string $preferred_out_file_basepath,
-		string $preferred_out_mime,
 		int $max_width,
 		int $max_height
 	): ThumbGenerationResult {