diff --git a/test/Praktikum3/TriangleCheckerTest.java b/test/Praktikum3/TriangleCheckerTest.java
index 640ddf0..e94edca 100644
--- a/test/Praktikum3/TriangleCheckerTest.java
+++ b/test/Praktikum3/TriangleCheckerTest.java
@@ -17,5 +17,6 @@ class TriangleCheckerTest {
         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));
+        assertEquals(TriangleChecker.TriangleType.ISOSCELES, TriangleChecker.checkTriangle(5,5,3));
     }
 }
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