diff --git a/assets/js/options.js b/assets/js/options.js
index f310ad819..6fcb0d45c 100755
--- a/assets/js/options.js
+++ b/assets/js/options.js
@@ -655,7 +655,7 @@ window.imagify = window.imagify || {};
 
 			_this = this;
 
-			$.get( this.getAjaxUrl( 'MissingWebp', imagifyOptions.bulk.contexts ) )
+			$.get( this.getAjaxUrl( 'MissingNextGen', imagifyOptions.bulk.contexts ) )
 				.done( function( response ) {
 					var errorMessage;
 
diff --git a/inc/functions/api.php b/inc/functions/api.php
index e53831340..2168dd70e 100755
--- a/inc/functions/api.php
+++ b/inc/functions/api.php
@@ -277,14 +277,14 @@ function imagify_bulk_optimize( $contexts, $optimization_level ) {
 }
 
 /**
- * Runs the WebP generation
+ * Runs the next-gen generation
  *
  * @param array $contexts An array of contexts (WP/Custom folders).
  *
  * @return void
  */
-function imagify_generate_webp( $contexts ) {
-	Imagify\Bulk\Bulk::get_instance()->run_generate_webp( $contexts );
+function imagify_generate_nextgen( $contexts ) {
+	Imagify\Bulk\Bulk::get_instance()->run_generate_nextgen( $contexts );
 }
 
 /**
diff --git a/inc/functions/attachments.php b/inc/functions/attachments.php
index b19488102..af361d74a 100755
--- a/inc/functions/attachments.php
+++ b/inc/functions/attachments.php
@@ -19,7 +19,6 @@ function imagify_get_mime_types( $type = null ) {
 			'png'          => 'image/png',
 			'gif'          => 'image/gif',
 			'webp'         => 'image/webp',
-			'avif'         => 'image/avif',
 		];
 	}