diff --git a/native/jni/Android.mk b/native/jni/Android.mk
index d53757f..0f7aef2 100644
--- a/native/jni/Android.mk
+++ b/native/jni/Android.mk
@@ -45,6 +45,7 @@
     correction.cpp \
     dictionary.cpp \
     proximity_info.cpp \
+    proximity_info_state.cpp \
     unigram_dictionary.cpp
 
 LOCAL_SRC_FILES := \