diff --git a/README.markdown b/README.markdown
index 57f0c05..efc788c 100644
--- a/README.markdown
+++ b/README.markdown
@@ -40,7 +40,7 @@ Don't Fake the FS Immediately
     
     FakeFS.activate!
     # your code
-    FakeFS.deactive!
+    FakeFS.deactivate!
     
     # or
     FakeFS do