diff --git a/README.md b/README.md
index 7584356..e2aeb88 100644
--- a/README.md
+++ b/README.md
@@ -364,6 +364,11 @@ foo.bar();
 
 console.log(capture(spiedFoo.bar).last()); // [42] 
 ```
+## Limitations
+
+You can not mock standalone functions (example `start()`) using ts-mockito. It only supports the mocking of functions that are associated with a class (example `Car.start()`).
+
+
 
 ### Thanks