diff --git a/app/src/main/java/lightcontainer/protocol/rules/reader/SigninRule.java b/app/src/main/java/lightcontainer/protocol/rules/reader/SigninRule.java
index e61a307..9dc7e3a 100644
--- a/app/src/main/java/lightcontainer/protocol/rules/reader/SigninRule.java
+++ b/app/src/main/java/lightcontainer/protocol/rules/reader/SigninRule.java
@@ -3,15 +3,19 @@ package lightcontainer.protocol.rules.reader;
 import lightcontainer.domains.client.Context;
 import lightcontainer.interfaces.ProtocolRepository;
 import lightcontainer.protocol.ProtocolReader;
+import lightcontainer.protocol.StandardizedDefinitions;
 import lightcontainer.protocol.rules.writer.SignErrorRule;
 import lightcontainer.protocol.rules.writer.SignOkRule;
 
+import static lightcontainer.protocol.StandardizedDefinitions.CLIENT_SIGN_IN;
+
 /**
  * Règle permettant de gérer la connection d'un utilisateur
  */
 public class SigninRule extends ProtocolReader {
     // Constants
-    private static final String PATTERN = "^SIGNIN ([A-Za-z0-9]{5,20}) ([^ !]{5,50})\r\n$";
+    //"^SIGNIN ([A-Za-z0-9]{5,20}) ([^ !]{5,50})\r\n$"
+    private static final String PATTERN = CLIENT_SIGN_IN;
 
     private static final String NAME = "SIGNIN";