diff --git a/src/test/java/seedu/address/logic/commands/AddCommandTest.java b/src/test/java/seedu/address/logic/commands/AddCommandTest.java
index 0099545aa90..270b66a9248 100644
--- a/src/test/java/seedu/address/logic/commands/AddCommandTest.java
+++ b/src/test/java/seedu/address/logic/commands/AddCommandTest.java
@@ -50,8 +50,8 @@ public void execute_duplicatePerson_throwsCommandException() {
         AddCommand addCommand = new AddCommand(validPerson);
         ModelStub modelStub = new ModelStubWithPerson(validPerson);
 
-        assertThrows(CommandException.class, AddCommand.MESSAGE_DUPLICATE_PERSON,
-                () -> addCommand.execute(modelStub, ""));
+        assertThrows(CommandException.class, AddCommand.MESSAGE_DUPLICATE_PERSON, () -> addCommand.execute(
+                modelStub, ""));
     }
 
     @Test