diff --git a/k9mail/src/main/java/com/fsck/k9/mailstore/LocalFolder.java b/k9mail/src/main/java/com/fsck/k9/mailstore/LocalFolder.java
index 7233ce60b..35ab09d95 100644
--- a/k9mail/src/main/java/com/fsck/k9/mailstore/LocalFolder.java
+++ b/k9mail/src/main/java/com/fsck/k9/mailstore/LocalFolder.java
@@ -9,7 +9,6 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Date;
@@ -69,8 +68,7 @@ import org.apache.james.mime4j.util.MimeUtil;
 import timber.log.Timber;
 
 
-public class LocalFolder extends Folder<LocalMessage> implements Serializable {
-    private static final long serialVersionUID = -1973296520918624767L;
+public class LocalFolder extends Folder<LocalMessage> {
     private static final int MAX_BODY_SIZE_FOR_DATABASE = 16 * 1024;
     private static final long INVALID_MESSAGE_PART_ID = -1;
 
diff --git a/k9mail/src/main/java/com/fsck/k9/mailstore/LocalStore.java b/k9mail/src/main/java/com/fsck/k9/mailstore/LocalStore.java
index 0f08aa443..1e8763d36 100644
--- a/k9mail/src/main/java/com/fsck/k9/mailstore/LocalStore.java
+++ b/k9mail/src/main/java/com/fsck/k9/mailstore/LocalStore.java
@@ -9,7 +9,6 @@ import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
@@ -75,9 +74,7 @@ import org.openintents.openpgp.util.OpenPgpApi.OpenPgpDataSource;
  * Implements a SQLite database backed local store for Messages.
  * </pre>
  */
-public class LocalStore extends Store implements Serializable {
-    private static final long serialVersionUID = -5142141896809423072L;
-
+public class LocalStore extends Store {
     static final String[] EMPTY_STRING_ARRAY = new String[0];
     static final byte[] EMPTY_BYTE_ARRAY = new byte[0];