diff --git a/tools/project.py b/tools/project.py
index 38ed395a42d..02cd7d16217 100644
--- a/tools/project.py
+++ b/tools/project.py
@@ -380,8 +380,8 @@ def main():
                 ignore=options.ignore
             )
         except NotSupportedException as exc:
-            args_error(parser, "%s not supported by %s" % (mcu, ide))
             print("[Not Supported] %s" % str(exc))
+            exit(1)
     exit(0)
 
 if __name__ == "__main__":