diff --git a/src/lib/page_functions.py b/src/lib/page_functions.py
index 3c00723..0fd1825 100644
--- a/src/lib/page_functions.py
+++ b/src/lib/page_functions.py
@@ -333,7 +333,7 @@ def replace_parameter_if_double(page_content, p, v):
         print('\nreplace_parameter_if_double()')
 
     regex = r'\| *' + p + r' *='
-    if '}}' not in page_content or not re.search(regex, page_content):
+    if '}}' not in page_content or re.search(regex, page_content) is None:
         return ''
 
     if re.search(regex, page_content).start() > page_content.find('}}'):
diff --git a/src/wiktionary/fr_wiktionary_format.py b/src/wiktionary/fr_wiktionary_format.py
index c225e75..e59152e 100644
--- a/src/wiktionary/fr_wiktionary_format.py
+++ b/src/wiktionary/fr_wiktionary_format.py
@@ -558,7 +558,7 @@ def treat_page(page):
                     else:
                         line_end = page_content2[:page_content2.find('\n')]
                         new_line_end = replace_parameter_if_double(line_end, 'lang', language_code)
-                        if line_end != new_line_end:
+                        if new_line_end != '' and line_end != new_line_end:
                             # Fix doubles
                             new_page_content2 = page_content2.replace(line_end, new_line_end)
                             page_content = page_content.replace(page_content2, new_page_content2)