diff --git a/2. Services/2.1 Foundations/2.1 Foundations.md b/2. Services/2.1 Foundations/2.1 Foundations.md
index cbbcd89..b75ed81 100644
--- a/2. Services/2.1 Foundations/2.1 Foundations.md	
+++ b/2. Services/2.1 Foundations/2.1 Foundations.md	
@@ -1072,7 +1072,7 @@ private async Task ShouldThrowValidationExceptionOnRetrieveByIdIfStudentNotFound
 
 	var notFoundStudentException =
 		new NotFoundStudentException(
-			message: $"Student not found with the id: {inputStudentId}",
+			message: $"Student is not found with the id: {inputStudentId}",
 			innerException: innerException.innerException.As<Xeption>());
 
 	var expectedStudentValidationException =