diff --git a/test/Praktikum3/TriangleCheckerTest.java b/test/Praktikum3/TriangleCheckerTest.java
index 261f87b..640ddf0 100644
--- a/test/Praktikum3/TriangleCheckerTest.java
+++ b/test/Praktikum3/TriangleCheckerTest.java
@@ -16,5 +16,6 @@ class TriangleCheckerTest {
         assertEquals(TriangleChecker.TriangleType.NONE, TriangleChecker.checkTriangle(5,9,-13));
         assertEquals(TriangleChecker.TriangleType.NONE, TriangleChecker.checkTriangle(20,3,2));
         assertEquals(TriangleChecker.TriangleType.NONE, TriangleChecker.checkTriangle(10,20,10));
+        assertEquals(TriangleChecker.TriangleType.NONE, TriangleChecker.checkTriangle(1,1,13));
     }
 }
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