diff --git a/test/03_before_build/setup.py b/test/03_before_build/setup.py
index 72431cf2..afc30692 100644
--- a/test/03_before_build/setup.py
+++ b/test/03_before_build/setup.py
@@ -3,7 +3,6 @@ import sys
 
 # here we assert that the Python version as written to version.txt in the CIBW_BEFORE_BUILD step
 # is the same one as is currently running.
-sys.stderr.write('sys.argv \n' + str(sys.argv))
 if sys.argv[-1] != '--name':
     with open('version.txt') as f:
         stored_version = f.read()