diff --git a/example.py b/example.py
index 19d1c0d..6cce2b7 100644
--- a/example.py
+++ b/example.py
@@ -8,9 +8,9 @@ def test_add():
 
 
 def subtract(a, b):
-    return a + b  # <--- fix this in step 8
+    return a - b  # <--- fix this in step 8
 
 
 # uncomment the following test in step 5
 def test_subtract():
-   assert subtract(2, 3) == -1
\ No newline at end of file
+    assert subtract(2, 3) == -1