diff --git a/composer.json b/composer.json
index df58c9e3..3bcd4218 100644
--- a/composer.json
+++ b/composer.json
@@ -45,10 +45,10 @@
 
 	"scripts": {
 		"pre-install-cmd" : [
-			"php -r \"array_map('unlink', array_merge(glob('lib/vendor/js/*.{js,map}', GLOB_BRACE), glob('lib/vendor/css/*.css'), glob('lib/vendor/swf/*.swf')));\""
+			"php -r \"array_map('unlink', array_merge(glob('lib/vendor/js/j*.{js,map}', GLOB_BRACE), glob('lib/vendor/css/*.css'), glob('lib/vendor/swf/*.swf')));\""
 		],
 		"pre-update-cmd" : [
-			"php -r \"array_map('unlink', array_merge(glob('lib/vendor/js/*.{js,map}', GLOB_BRACE), glob('lib/vendor/css/*.css'), glob('lib/vendor/swf/*.swf')));\""
+			"php -r \"array_map('unlink', array_merge(glob('lib/vendor/js/j*.{js,map}', GLOB_BRACE), glob('lib/vendor/css/*.css'), glob('lib/vendor/swf/*.swf')));\""
 		],
 
 		"post-install-cmd" : [