diff --git a/TODO.md b/TODO.md
index b72c068..e857982 100644
--- a/TODO.md
+++ b/TODO.md
@@ -43,4 +43,5 @@
 ## RTL8710B
 
 - add generic board definition
+- move to GNU++11 (and verify that it works) - take all stdio functions from stdio.h
 - rewrite most of Wiring (it was copied from `ambd_arduino`, and is ugly)
diff --git a/builder/frameworks/beken-72xx-sdk.py b/builder/frameworks/beken-72xx-sdk.py
index 8d0dd69..f6e152a 100644
--- a/builder/frameworks/beken-72xx-sdk.py
+++ b/builder/frameworks/beken-72xx-sdk.py
@@ -58,7 +58,7 @@ env.Append(
         "-Wno-unknown-pragmas",
     ],
     CXXFLAGS=[
-        "-std=c++11",
+        "-std=gnu++11",
         "-MMD",
         "-fno-exceptions",
         "-fno-rtti",