diff --git a/app/src/main/cpp/CMakeLists.txt b/app/src/main/cpp/CMakeLists.txt
index 4c8ce219..f5a6a16a 100644
--- a/app/src/main/cpp/CMakeLists.txt
+++ b/app/src/main/cpp/CMakeLists.txt
@@ -36,6 +36,8 @@ add_definitions(-DHAVE_STRING_H) # for memcpy in md5.c
 add_definitions(-DOUTPUT_CAMERA_DBG_INFO)
 add_definitions(-DALIGN_HB_TIMER_TO_PHOTO)
 
+# add_definitions(-DUSING_N938)
+
 # include_directories(${OpenCV_DIR}/include)
 # add_library( lib_opencv SHARED IMPORTED )
 # set_target_properties(lib_opencv PROPERTIES IMPORTED_LOCATION ${OpenCV_DIR}/../libs/${ANDROID_ABI}/libopencv_java4.so)