diff --git a/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerService.java b/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerService.java
index 42b05592c6de0c89790a56a3c0dbd2dfd175b834..3bdfe1f271cfdb1bd91ae8f5e52ddb9e49dcead7 100644
--- a/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerService.java
+++ b/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerService.java
@@ -184,7 +184,9 @@ public class AndroidSpellCheckerService extends SpellCheckerService
 
     @Override
     public Session createSession() {
-        return new AndroidSpellCheckerSession(this);
+        // Should not refer to AndroidSpellCheckerSession directly considering
+        // that AndroidSpellCheckerSession may be overlaid.
+        return AndroidSpellCheckerSessionFactory.newInstance(this);
     }
 
     public static SuggestionsInfo getNotInDictEmptySuggestions() {
diff --git a/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerSession.java b/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerSession.java
index e0f340879a46a4f2dd819fff8d1e62cd9e59e73c..c8ad2c6997634a7c2bc95c1af8f89846a0e12a04 100644
--- a/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerSession.java
+++ b/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerSession.java
@@ -16,7 +16,6 @@
 
 package com.android.inputmethod.latin.spellcheck;
 
-
 import android.service.textservice.SpellCheckerService.Session;
 import android.text.TextUtils;
 import android.util.Log;
diff --git a/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerSessionFactory.java b/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerSessionFactory.java
new file mode 100644
index 0000000000000000000000000000000000000000..8eb1eb68e476cc7bc31feb48d5b90a7f76629104
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerSessionFactory.java
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package com.android.inputmethod.latin.spellcheck;
+
+import android.service.textservice.SpellCheckerService.Session;
+
+public abstract class AndroidSpellCheckerSessionFactory {
+    public static Session newInstance(AndroidSpellCheckerService service) {
+        return new AndroidSpellCheckerSession(service);
+    }
+}