diff --git a/app/src/main/cpp/CMakeLists.txt b/app/src/main/cpp/CMakeLists.txt
index fc28d994..0000c208 100644
--- a/app/src/main/cpp/CMakeLists.txt
+++ b/app/src/main/cpp/CMakeLists.txt
@@ -30,6 +30,7 @@ add_definitions(-DUSING_XY_EXTENSION)
 add_definitions(-DSQLITE_THREADSAFE=1)
 add_definitions(-DHAVE_STRING_H) # for memcpy in md5.c
 # add_definitions(-DUSING_NRSEC)
+# add_definitions(-DUSING_CERT)
 # add_definitions(-DUSING_DOWSE)
 # OUTPUT_CAMERA_DBG_INFO: 照片上打印CARERA相关信息
 add_definitions(-DOUTPUT_CAMERA_DBG_INFO)