diff --git a/app/src/main/cpp/CMakeLists.txt b/app/src/main/cpp/CMakeLists.txt
index 75c41206..c9395a94 100644
--- a/app/src/main/cpp/CMakeLists.txt
+++ b/app/src/main/cpp/CMakeLists.txt
@@ -52,8 +52,6 @@ elseif(ANDROID_ABI STREQUAL "arm64-v8a")
     # add_definitions(-DUSING_N938)
 endif()
 
-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)