diff --git a/native/src/dictionary.cpp b/native/src/dictionary.cpp
index a49769b..9e32ee8 100644
--- a/native/src/dictionary.cpp
+++ b/native/src/dictionary.cpp
@@ -57,4 +57,12 @@
     return mUnigramDictionary->isValidWord(word, length);
 }
 
+int Dictionary::getBigramPosition(unsigned short *word, int length) {
+    if (IS_LATEST_DICT_VERSION) {
+        return mUnigramDictionary->getBigramPosition(DICTIONARY_HEADER_SIZE, word, 0, length);
+    } else {
+        return mUnigramDictionary->getBigramPosition(0, word, 0, length);
+    }
+}
+
 } // namespace latinime