diff --git a/chunky/src/java/se/llbit/chunky/main/CommandLineOptions.java b/chunky/src/java/se/llbit/chunky/main/CommandLineOptions.java
index 8a4cc7f1b..693216a1e 100644
--- a/chunky/src/java/se/llbit/chunky/main/CommandLineOptions.java
+++ b/chunky/src/java/se/llbit/chunky/main/CommandLineOptions.java
@@ -33,7 +33,6 @@
 import se.llbit.json.PrettyPrinter;
 import se.llbit.log.Log;
 import se.llbit.util.mojangapi.MojangApi;
-import se.llbit.util.StringUtil;
 import se.llbit.util.TaskTracker;
 
 import java.io.ByteArrayInputStream;
@@ -86,7 +85,7 @@ enum Mode {
   /**
    * This is the usage output generated for the --help flag.
    */
-  private static final String USAGE = StringUtil
+  private static final String USAGE = String
       .join("\n", "Usage: mapLoader [OPTIONS] [WORLD DIRECTORY]", "Options:",
           "  -texture <FILE>        use FILE as the texture pack (must be a Zip file)",
           "  -textures <FILES>      use FILES as the texture packs (must be Zip files), ",
diff --git a/chunky/src/java/se/llbit/util/StringUtil.java b/chunky/src/java/se/llbit/util/StringUtil.java
deleted file mode 100644
index 33d39e388..000000000
--- a/chunky/src/java/se/llbit/util/StringUtil.java
+++ /dev/null
@@ -1,33 +0,0 @@
-/* Copyright (c) 2015 Jesper Öqvist <jesper@llbit.se>
- *
- * This file is part of Chunky.
- *
- * Chunky is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Chunky is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * You should have received a copy of the GNU General Public License
- * along with Chunky.  If not, see <http://www.gnu.org/licenses/>.
- */
-package se.llbit.util;
-
-public abstract class StringUtil {
-  /**
-   * Join the string arguments using a separator string.
-   */
-  public static String join(String separator, String... strings) {
-    StringBuilder buf = new StringBuilder();
-    for (int i = 0; i < strings.length; ++i) {
-      if (i > 0) {
-        buf.append(separator);
-      }
-      buf.append(strings[i]);
-    }
-    return buf.toString();
-  }
-}