diff --git a/pdf_build_src/process_markdowns.py b/pdf_build_src/process_markdowns.py
index 451e52e1b3..c39640c77a 100644
--- a/pdf_build_src/process_markdowns.py
+++ b/pdf_build_src/process_markdowns.py
@@ -16,7 +16,7 @@
 import numpy as np
 
 sys.path.append("../tools/")
-from schemacode import macros
+from schemacode import macros  # noqa   (used in "eval" call later on)
 
 
 def run_shell_cmd(command):
@@ -410,7 +410,7 @@ def edit_titlepage():
                 "\\end{titlepage}")
 
     with open('cover.tex', 'w') as file:
-        data = file.writelines(data)
+        file.writelines(data)
 
 
 def process_macros(duplicated_src_dir_path):