diff --git a/src/com/fsck/k9/mail/internet/EncoderUtil.java b/src/com/fsck/k9/mail/internet/EncoderUtil.java
index d19358191..8b1428f65 100644
--- a/src/com/fsck/k9/mail/internet/EncoderUtil.java
+++ b/src/com/fsck/k9/mail/internet/EncoderUtil.java
@@ -4,7 +4,6 @@ package com.fsck.k9.mail.internet;
 import java.nio.ByteBuffer;
 import java.nio.charset.Charset;
 import java.util.BitSet;
-import java.util.Locale;
 
 import org.apache.james.mime4j.util.CharsetUtil;
 
@@ -20,8 +19,6 @@ import org.apache.james.mime4j.util.CharsetUtil;
 public class EncoderUtil {
     private static final BitSet Q_RESTRICTED_CHARS = initChars("=_?\"#$%&'(),.:;<>@[\\]^`{|}~");
 
-    private static final int MAX_USED_CHARACTERS = 50;
-
     private static final String ENC_WORD_PREFIX = "=?";
     private static final String ENC_WORD_SUFFIX = "?=";