return new list

diff --git a/src/net/pterodactylus/util/io/MimeTypes.java b/src/net/pterodactylus/util/io/MimeTypes.java
index 6c31c28..449b7c1 100644 (file)
--- a/src/net/pterodactylus/util/io/MimeTypes.java
+++ b/src/net/pterodactylus/util/io/MimeTypes.java
@@ -769,7 +769,7 @@ public class MimeTypes {
         * @return All known MIME types
         */
        public static List<String> getAllMimeTypes() {
-               return mimeTypes;
+               return new ArrayList<String>(mimeTypes);
        }
 
        /**