diff --git a/app/src/main/java/lightcontainer/protocol/ProtocolWriter.java b/app/src/main/java/lightcontainer/protocol/ProtocolWriter.java
index 051794a..4605a30 100644
--- a/app/src/main/java/lightcontainer/protocol/ProtocolWriter.java
+++ b/app/src/main/java/lightcontainer/protocol/ProtocolWriter.java
@@ -31,7 +31,7 @@ public abstract class ProtocolWriter {
     public String execute(String... datas) {
         // Concatatène le nom de la commande avec les données (trim), avec un espace entre chaque
         String command = null;
-        StringJoiner builder = new StringJoiner(" ", this.cmdName, "");
+        StringJoiner builder = new StringJoiner(" ", this.cmdName, "\r\n");
 
         for (String data : datas)
             builder.add(data);
diff --git a/app/src/test/java/lightcontainer/protocol/rules/writer/SignoutRuleTest.java b/app/src/test/java/lightcontainer/protocol/rules/writer/SignoutRuleTest.java
index ab427ff..31bf799 100644
--- a/app/src/test/java/lightcontainer/protocol/rules/writer/SignoutRuleTest.java
+++ b/app/src/test/java/lightcontainer/protocol/rules/writer/SignoutRuleTest.java
@@ -1,7 +1,21 @@
 package lightcontainer.protocol.rules.writer;
 
+import lightcontainer.protocol.ProtocolWriter;
+import org.junit.jupiter.api.Test;
+
 import static org.junit.jupiter.api.Assertions.*;
 
 class SignoutRuleTest {
 
+    @Test
+    public void whenRuleIsRightThenReturnCommand() {
+        //GIVEN
+        ProtocolWriter protocolWriter = new SignoutRule();
+        String[] datas = {};
+
+        //EXPECT
+        assertNotNull(protocolWriter.execute(datas));
+        assertEquals("SIGNOUT\r\n", protocolWriter.execute(datas));
+    }
+
 }
\ No newline at end of file