diff --git a/lobster/tools/cpptest/cpptest.py b/lobster/tools/cpptest/cpptest.py
index da292a6f..ec4dde1c 100644
--- a/lobster/tools/cpptest/cpptest.py
+++ b/lobster/tools/cpptest/cpptest.py
@@ -379,7 +379,6 @@ def main():
     # lobster-trace: cpptest_req.Valid_Source_Input_File_Paths
     # lobster-trace: cpptest_req.No_Source_Input_File_Path
     # lobster-trace: cpptest_req.Invalid_Source_Input_File_Paths
-    ap = argparse.ArgumentParser()
     ap.add_argument("files",
                     nargs="+",
                     metavar="FILE|DIR")
@@ -405,4 +404,4 @@ def main():
 
 
 if __name__ == "__main__":
-    sys.exit(main())
+    sys.exit(main())
\ No newline at end of file