diff --git a/README.md b/README.md
index 3a364a9b..55c0ed17 100644
--- a/README.md
+++ b/README.md
@@ -104,6 +104,7 @@ Modify net.socket:connect() api to accept domain name, auto DNS.
 </table>
 
 #Build option
+####*GNU toolchain is not tested*
 ####file ./app/include/user_config.h
 ```c
 #define FLASH_512K
diff --git a/app/include/user_config.h b/app/include/user_config.h
index 21074009..abcf6e84 100644
--- a/app/include/user_config.h
+++ b/app/include/user_config.h
@@ -7,8 +7,8 @@
 // #define FLASH_1M
 // #define FLASH_2M
 // #define FLASH_4M
-// #define DEVELOP_VERSION
-#define FULL_VERSION_FOR_USER
+#define DEVELOP_VERSION
+// #define FULL_VERSION_FOR_USER
 
 #ifdef DEVELOP_VERSION
 #define NODE_DEBUG