diff --git a/calculator.py b/calculator.py
index 0cd7982..ea88c0e 100644
--- a/calculator.py
+++ b/calculator.py
@@ -1,5 +1,5 @@
 def add(a, b):
-    return a - b
+    return a + b
 
 def subtract(a, b):
     return a - b