diff --git a/docs/content/https/acme.md b/docs/content/https/acme.md
index 2b6a68137..dddd74fbc 100644
--- a/docs/content/https/acme.md
+++ b/docs/content/https/acme.md
@@ -479,7 +479,7 @@ docker run -v "/my/host/acme:/etc/traefik/acme" traefik
 ```
 
 !!! warning
-    For concurrency reason, this file cannot be shared across multiple instances of Traefik.
+    For concurrency reasons, this file cannot be shared across multiple instances of Traefik.
 
 ## Fallback