diff --git a/ChallengesWithTestsMark8.Tests/ChallengesSet04Tests.cs b/ChallengesWithTestsMark8.Tests/ChallengesSet04Tests.cs
index 839c6d4fd..2b5a8b3d1 100755
--- a/ChallengesWithTestsMark8.Tests/ChallengesSet04Tests.cs
+++ b/ChallengesWithTestsMark8.Tests/ChallengesSet04Tests.cs
@@ -89,6 +89,9 @@ public void ChangeBusinessNameTo_TrueCoders(string originalBusinessName)
         }
 
         [Theory]
+        [InlineData(1,1,50,false)]
+        [InlineData(1,50,1,false)]
+        [InlineData(50,1,1, false)]
         [InlineData(2, 2, 2, true)]
         [InlineData(2, 3, 2, true)]
         [InlineData(3, 4, 5, true)]