diff --git a/share/tools/create_manpage_completions.py b/share/tools/create_manpage_completions.py
index 1fc26a846..2efb55db4 100755
--- a/share/tools/create_manpage_completions.py
+++ b/share/tools/create_manpage_completions.py
@@ -529,7 +529,7 @@ class TypeScdocManParser(ManParser):
             return False
         options_section = options_section_matched.group(1)
 
-        options_parts_regex = re.compile("(.*?).RE", re.DOTALL)
+        options_parts_regex = re.compile(r"(.*?)\.RE", re.DOTALL)
         options_matched = re.match(options_parts_regex, options_section)
         add_diagnostic("Command is %r" % CMDNAME)