diff --git a/converter.py b/converter.py
index 6d6f0fbb5bc996c7a61398ba8d9912d058645077..69c9029227efb231470056081893ac8e70bbe622 100644
--- a/converter.py
+++ b/converter.py
@@ -124,5 +124,9 @@ class TestConverter(unittest.TestCase):
         res = self.c.convert('HUIHIN')
         self.assertEqual(res, "Bitte ganze Zahlen eingeben")
 
+    def test_convertFloat(self):
+        res = self.c.convert(4.3)
+        self.assertEqual(res, "Bitte ganze Zahlen eingeben")
+
 if __name__ == "__main__":
     unittest.main()