diff --git a/native/jni/Android.mk b/native/jni/Android.mk
index 54f61d9..06ed571 100644
--- a/native/jni/Android.mk
+++ b/native/jni/Android.mk
@@ -49,7 +49,8 @@
     proximity_info.cpp \
     proximity_info_state.cpp \
     unigram_dictionary.cpp \
-    gesture/gesture_decoder_wrapper.cpp
+    gesture/gesture_decoder_wrapper.cpp \
+    gesture/incremental_decoder_wrapper.cpp
 
 LOCAL_SRC_FILES := \
     $(LATIN_IME_JNI_SRC_FILES) \