diff --git a/native/jni/Android.mk b/native/jni/Android.mk
index 771623c..acd230f 100644
--- a/native/jni/Android.mk
+++ b/native/jni/Android.mk
@@ -72,7 +72,8 @@
     suggest/core/session/dic_traverse_session.cpp \
     $(addprefix suggest/policyimpl/dictionary/, \
         dynamic_patricia_trie_policy.cpp \
-        patricia_trie_policy.cpp) \
+        patricia_trie_policy.cpp \
+        patricia_trie_reading_utils.cpp) \
     suggest/policyimpl/gesture/gesture_suggest_policy_factory.cpp \
     $(addprefix suggest/policyimpl/typing/, \
         scoring_params.cpp \