diff --git a/cloudinary-image-management-and-manipulation-in-the-cloud-cdn/php/class-media.php b/cloudinary-image-management-and-manipulation-in-the-cloud-cdn/php/class-media.php
index 7cf4a4dde..c22c428eb 100644
--- a/cloudinary-image-management-and-manipulation-in-the-cloud-cdn/php/class-media.php
+++ b/cloudinary-image-management-and-manipulation-in-the-cloud-cdn/php/class-media.php
@@ -1257,6 +1257,10 @@ public function get_asset_payload() {
 		$asset['sync_key'] = $asset['public_id'];
 		if ( ! empty( $data['asset']['derived'] ) ) {
 			$asset['url'] = filter_var( $data['asset']['derived'][0]['secure_url'], FILTER_SANITIZE_URL );
+			$format       = pathinfo( $asset['url'], PATHINFO_EXTENSION );
+			if ( $format !== $data['asset']['format'] ) {
+				$asset['sync_key'] .= '.' . $format;
+			}
 		}
 
 		//convert_media_extension
@@ -1274,7 +1278,7 @@ public function get_asset_payload() {
 		// Check for transformations.
 		$transformations = $this->get_transformations_from_string( $asset['url'] );
 		if ( ! empty( $transformations ) ) {
-			$asset['sync_key']        .= wp_json_encode( $transformations );
+			$asset['sync_key']       .= wp_json_encode( $transformations );
 			$asset['transformations'] = $transformations;
 		}
 		// Attempt to find attachment ID.