diff --git a/fib.py b/fib.py
index 50722c2..c81b64a 100644
--- a/fib.py
+++ b/fib.py
@@ -8,6 +8,8 @@
 def fibonacci(position):
   if(position == 1 or position == 2):
     return 1
+  elif (position == 0):
+    return 0
   return fibonacci(position - 1) + fibonacci(position - 2)