diff --git a/tools/dicttool/Android.mk b/tools/dicttool/Android.mk
index 5d1a30e..b83ce57 100644
--- a/tools/dicttool/Android.mk
+++ b/tools/dicttool/Android.mk
@@ -43,6 +43,7 @@
         $(LATINIME_CORE_SOURCE_DIRECTORY)/settings/NativeSuggestOptions.java \
         $(LATINIME_CORE_SOURCE_DIRECTORY)/utils/ByteArrayDictBuffer.java \
         $(LATINIME_CORE_SOURCE_DIRECTORY)/utils/CollectionUtils.java \
+        $(LATINIME_CORE_SOURCE_DIRECTORY)/utils/CombinedFormatUtils.java \
         $(LATINIME_CORE_SOURCE_DIRECTORY)/utils/CoordinateUtils.java \
         $(LATINIME_CORE_SOURCE_DIRECTORY)/utils/FileUtils.java \
         $(LATINIME_CORE_SOURCE_DIRECTORY)/utils/JniUtils.java \