diff --git a/build-android/jni/Android.mk b/build-android/jni/Android.mk
index a363916..042e7a5 100644
--- a/build-android/jni/Android.mk
+++ b/build-android/jni/Android.mk
@@ -28,6 +28,7 @@ LOCAL_EXPORT_C_INCLUDES += $(LOCAL_PATH)../include
 LOCAL_SRC_FILES += $(LOCAL_PATH)/../../Adapter.cc \
         $(LOCAL_PATH)/../../slurp.cc \
         $(LOCAL_PATH)/../../call_with_lock.cc \
+        $(LOCAL_PATH)/../../passphrase_cache.cc  \
         $(LOCAL_PATH)/../../status_to_string.cc