diff --git a/client/index.html b/client/index.html
index 3939cc7..495ace2 100644
--- a/client/index.html
+++ b/client/index.html
@@ -25,7 +25,7 @@
 					type="text"
 					name="ip-address"
 					title="Adresse IP du robot (ex: 192.168.0.1)"
-					pattern="\d+\.\d+\.\d+\.\d+"
+					pattern="\d+\.\d+\.\d+\.\d+(:\d+)?"
 					placeholder="192.168.0.0"
 					required
 				/>