diff --git a/scripts/check_chapters.py b/scripts/check_chapters.py
index e0e5707c9..cf2766cf2 100755
--- a/scripts/check_chapters.py
+++ b/scripts/check_chapters.py
@@ -609,9 +609,9 @@ def fix_spell(s: str) -> str:
     # V2: using multiprocessing
     # prepare
     num_processes = min(cpu_count(), len(list_of_chapter_files))
-    pool = Pool(processes=num_processes)
-    # run
-    results = pool.map(process_file, list_of_chapter_files)
+    with Pool(processes=num_processes) as pool:
+        # run
+        results = pool.map(process_file, list_of_chapter_files)
     any_issue_found = True in results
 
     # V1: single processing
diff --git a/scripts/ebook/step_3.py b/scripts/ebook/step_3.py
index 8e00812bb..515dc5662 100755
--- a/scripts/ebook/step_3.py
+++ b/scripts/ebook/step_3.py
@@ -86,7 +86,7 @@
     # not used in DE version
 
     # \censor
-    cont = re.sub(r"\\censor\{.*?\}", r"xxxxxx", cont)
+    cont = re.sub(r"\\censor\{[^}]*\}", r"xxxxxx", cont)
 
     # # remove Deathly_Hallows_Sign.pdf and other pdf images
     # # \includegraphics[scale=0.125]{images/Deathly_Hallows_Sign.pdf}
diff --git a/scripts/ebook/step_6.py b/scripts/ebook/step_6.py
index 62bca5656..7b432d221 100755
--- a/scripts/ebook/step_6.py
+++ b/scripts/ebook/step_6.py
@@ -23,7 +23,7 @@ def fix_ellipsis(s: str) -> str:
     # 1. remove all spaces around ellipsis
     s = re.sub(r" *… *", "…", s)
     # 2. recreate some spaces
-    # before punctuation : no space, so governed by 1.
+    # before punctuation : no space, so covered by 1.
     # between words
     s = re.sub(r"(?<=[\w])…(?=[\w])", "… ", s)
     # after punctuation: add space