diff --git a/src/main/java/fr/xephi/authme/command/help/HelpPrinter.java b/src/main/java/fr/xephi/authme/command/help/HelpPrinter.java
index 73948920..d3d8f78d 100644
--- a/src/main/java/fr/xephi/authme/command/help/HelpPrinter.java
+++ b/src/main/java/fr/xephi/authme/command/help/HelpPrinter.java
@@ -1,10 +1,10 @@
 package fr.xephi.authme.command.help;
 
 import com.timvisee.dungeonmaze.Core;
-import fr.xephi.authme.commands.CommandArgumentDescription;
-import fr.xephi.authme.commands.CommandDescription;
-import fr.xephi.authme.commands.CommandParts;
-import fr.xephi.authme.commands.CommandPermissions;
+import fr.xephi.authme.command.CommandArgumentDescription;
+import fr.xephi.authme.command.CommandDescription;
+import fr.xephi.authme.command.CommandParts;
+import fr.xephi.authme.command.CommandPermissions;
 import com.timvisee.dungeonmaze.util.StringUtils;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;
diff --git a/src/main/java/fr/xephi/authme/util/StringUtils.java b/src/main/java/fr/xephi/authme/util/StringUtils.java
new file mode 100644
index 00000000..92b14c5c
--- /dev/null
+++ b/src/main/java/fr/xephi/authme/util/StringUtils.java
@@ -0,0 +1,19 @@
+package fr.xephi.authme.util;
+
+import net.ricecode.similarity.LevenshteinDistanceStrategy;
+import net.ricecode.similarity.StringSimilarityService;
+import net.ricecode.similarity.StringSimilarityServiceImpl;
+
+public class StringUtils {
+
+    public static double getDifference(String first, String second) {
+        if(first == null || second == null)
+            return 1.0;
+
+        StringSimilarityService service = new StringSimilarityServiceImpl(new LevenshteinDistanceStrategy());
+
+        double score = service.score(first, second);
+
+        return Math.abs(score - 1.0);
+    }
+}