diff --git a/app/routes.py b/app/routes.py
index bd46809..aff4463 100644
--- a/app/routes.py
+++ b/app/routes.py
@@ -34,7 +34,7 @@ def upload_dump():
     now = datetime.datetime.now()
     fulltime = now.isoformat()
     # client addr:
-    remote_addr = request.environ.get("HTTP_X_REAL_IP", request.remote_addr)
+    remote_addr = request.environ.get("HTTP_X_Real_IP", request.remote_addr)
     log.write("{} request from {}\n".format(fulltime, remote_addr))
     # Avec seulement alphanum et tiret:
     clean_deptname = re.sub(r"[^A-Za-z-]", "", request.form["dept_name"])