diff --git a/maths/primelib.py b/maths/primelib.py
index e2d432e1846a..a26b0eaeb328 100644
--- a/maths/primelib.py
+++ b/maths/primelib.py
@@ -454,6 +454,8 @@ def kg_v(number1, number2):
     40
     >>> kg_v(824,67)
     55208
+    >>> kg_v(1, 10)
+    10
     >>> kg_v(0)
     Traceback (most recent call last):
         ...