diff --git a/README.md b/README.md
index 89a31c97..913627db 100644
--- a/README.md
+++ b/README.md
@@ -374,7 +374,7 @@ If `When...` rules are present, you should call its `Complete()` method once you
This is the base type used in the provided system implementation.
-### AsSet
+### AsMap
```csharp
world
.GetEntities()
@@ -386,7 +386,7 @@ If `When...` rules are present, you should call its `Complete()` method once you
This is usefull if you need o(1) access to an entity based on a key.
-### AsSet
+### AsMultiMap
```csharp
world
.GetEntities()
@@ -798,4 +798,4 @@ CI, tests and code quality rely on those awesome projects:
- [NFulent](https://github.com/tpierrain/NFluent)
- [NSubstitute](https://github.com/nsubstitute/NSubstitute)
- [Roslynator](https://github.com/JosefPihrt/Roslynator)
-- [XUnit](https://github.com/xunit/xunit)
\ No newline at end of file
+- [XUnit](https://github.com/xunit/xunit)