diff --git a/providers/dns/infoblox/infoblox.toml b/providers/dns/infoblox/infoblox.toml
index e8d6d0d7..761e6f65 100644
--- a/providers/dns/infoblox/infoblox.toml
+++ b/providers/dns/infoblox/infoblox.toml
@@ -5,7 +5,7 @@ Code = "infoblox"
 Since = "v4.4.0"
 
 Example = '''
-INFOBLOX_USER=api-user-529 \
+INFOBLOX_USERNAME=api-user-529 \
 INFOBLOX_PASSWORD=b9841238feb177a84330febba8a83208921177bffe733 \
 INFOBLOX_HOST=infoblox.example.org
 lego --email you@example.com --dns infoblox --domains my.example.org run