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-rw-r--r--tools/codeblocks.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/codeblocks.py b/tools/codeblocks.py
index f46f0f1f93..9a25114e97 100644
--- a/tools/codeblocks.py
+++ b/tools/codeblocks.py
@@ -75,7 +75,7 @@ def CBProject(target, script, program):
Add = SubElement(elem, 'Add')
Add.set('directory', path)
- for macro in building.Env['CPPDEFINES']:
+ for macro in building.Env.get('CPPDEFINES', []):
Add = SubElement(elem, 'Add')
Add.set('option', "-D"+macro)