diff --git a/HISTORY.rst b/HISTORY.rst
index bcd86676..4ba4ee4d 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -7,6 +7,8 @@ PlatformIO 2.0
 2.8.5 (2016-02-??)
 ~~~~~~~~~~~~~~~~~~
 
+* Improved handling of String-based ``CPPDEFINES`` passed to extra ``build_flags``
+  (`issue #526 <https://github.com/platformio/platformio/issues/526>`_)
 * Fixed issue with incorrect handling of user's build flags where the base flags
   were passed after user's flags to GCC compiler
   (`issue #528 <https://github.com/platformio/platformio/issues/528>`_)
diff --git a/platformio/builder/tools/platformio.py b/platformio/builder/tools/platformio.py
index 32418b50..94c8ecc4 100644
--- a/platformio/builder/tools/platformio.py
+++ b/platformio/builder/tools/platformio.py
@@ -100,7 +100,6 @@ def ProcessFlags(env, flags):
         if not f:
             continue
         parsed_flags = env.ParseFlags(str(f))
-        print parsed_flags
         for flag in parsed_flags.pop("CPPDEFINES"):
             if not isinstance(flag, list):
                 env.Append(CPPDEFINES=flag)