diff --git a/functions.py b/functions.py
index dededd1..1699936 100644
--- a/functions.py
+++ b/functions.py
@@ -2,7 +2,7 @@ def add(a, b):
     return a + b
 
 def subtract(a, b):
-    return a + b  # <--- fix this in step 7
+    return a - b 
 
 def multiply(a, b):
     return a * b