diff --git a/Essentials/src/com/earth2me/essentials/Util.java b/Essentials/src/com/earth2me/essentials/Util.java
index 72c1accef..34e5c6420 100644
--- a/Essentials/src/com/earth2me/essentials/Util.java
+++ b/Essentials/src/com/earth2me/essentials/Util.java
@@ -23,11 +23,12 @@ public class Util
 	private final static Logger logger = Logger.getLogger("Minecraft");
 	private final static Pattern INVALIDFILECHARS = Pattern.compile("[^a-z0-9]");
 	private final static Pattern INVALIDCHARS = Pattern.compile("[^\t\n\r\u0020-\u007E\u0085\u00A0-\uD7FF\uE000-\uFFFC]");
+	private final static Pattern BADFILENAMES = Pattern.compile("^(CON|PRN|AUX|NUL|COM[1-9]|LPT[1-9])(\\.(.+))?$", Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE | Pattern.COMMENTS);
 
 	public static String sanitizeFileName(final String name)
 	{
 		String newName = INVALIDFILECHARS.matcher(name.toLowerCase(Locale.ENGLISH)).replaceAll("_");
-		if(Pattern.compile("^(CON|PRN|AUX|NUL|COM[1-9]|LPT[1-9])(\\.(.+))?$", Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE | Pattern.COMMENTS).matcher(newName).matches())
+		if(BADFILENAMES.matcher(newName).matches())
 			newName = "_" + newName;
 		return newName;
 	}