diff --git a/src/wikimore/app.py b/src/wikimore/app.py
index 5519a7c..233b2dc 100644
--- a/src/wikimore/app.py
+++ b/src/wikimore/app.py
@@ -112,7 +112,7 @@ def wiki_article(project, lang, title):
 
     logger.debug(f"Fetching {title} from {base_url}")
 
-    url = f"{base_url}/w/api.php?action=query&format=json&titles={escape(title.replace(" ", "_"), True)}&prop=revisions&rvprop=content&rvparse=1"
+    url = f"{base_url}/w/api.php?action=query&format=json&titles={escape(title.replace(' ', '_'), True)}&prop=revisions&rvprop=content&rvparse=1"
     with urllib.request.urlopen(url) as response:
         data = json.loads(response.read().decode())
     pages = data["query"]["pages"]