diff --git a/tools/test.py b/tools/test.py
index bdc9bb9c9d..4189650286 100644
--- a/tools/test.py
+++ b/tools/test.py
@@ -132,7 +132,7 @@ if __name__ == '__main__':
                 base_source_paths = ['.']
             
             
-            target = TARGET_MAP[options.mcu]
+            target = options.mcu
             
             build_report = {}
             build_properties = {}