diff --git a/main.py b/main.py
index 0c43609..27682b7 100644
--- a/main.py
+++ b/main.py
@@ -68,7 +68,7 @@ def calcul(a, b, c, operation = '+'):
        result = a & b
     if operation == 'and':
        result = a & b
-    if operation == |:
+    if operation == '|':
        result = a | b
     if operation == 'or':
        result = a | b