diff --git a/tools/dicttool/Android.mk b/tools/dicttool/Android.mk
index b83ce57..b1dd7f6 100644
--- a/tools/dicttool/Android.mk
+++ b/tools/dicttool/Android.mk
@@ -41,6 +41,7 @@
         $(LATINIME_CORE_SOURCE_DIRECTORY)/SuggestedWords.java \
         $(LATINIME_CORE_SOURCE_DIRECTORY)/WordComposer.java \
         $(LATINIME_CORE_SOURCE_DIRECTORY)/settings/NativeSuggestOptions.java \
+        $(LATINIME_CORE_SOURCE_DIRECTORY)/utils/BinaryDictionaryUtils.java \
         $(LATINIME_CORE_SOURCE_DIRECTORY)/utils/ByteArrayDictBuffer.java \
         $(LATINIME_CORE_SOURCE_DIRECTORY)/utils/CollectionUtils.java \
         $(LATINIME_CORE_SOURCE_DIRECTORY)/utils/CombinedFormatUtils.java \