diff --git a/calculator/calculator.py b/calculator/calculator.py
index 0f4f181..c2a7237 100644
--- a/calculator/calculator.py
+++ b/calculator/calculator.py
@@ -2,7 +2,7 @@ def add(x, y):
     return x + y
 
 def subtract(x, y):
-    return x - y
+    return x + y
 
 def multiply(x, y):
     return x * y