diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c5e7d8..129c8f1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix usage of `be ===` and `be =~` [#34](https://github.com/icy-arctic-fox/spectator/issues/34)
 - Better handling of the `be(nil)` when used with value types. [#37](https://github.com/icy-arctic-fox/spectator/issues/37)
 - Fix missing arguments for stubbed top-level methods (`system`, `exit`, etc.). [#36](https://github.com/icy-arctic-fox/spectator/issues/36)
+- Fix outdated naming when using `expect_any_instance_of`.
 
 ### Changed
 - Elegantly handle missing/undefined methods with `have_attributes` matcher.
diff --git a/src/spectator/mocks/expect_any_instance.cr b/src/spectator/mocks/expect_any_instance.cr
index 607c425..fcf7eec 100644
--- a/src/spectator/mocks/expect_any_instance.cr
+++ b/src/spectator/mocks/expect_any_instance.cr
@@ -10,8 +10,8 @@ module Spectator::Mocks
       Harness.current.mocks.expect(T, stub)
       value = Value.new(stub.name, stub.to_s)
       matcher = Matchers::ReceiveTypeMatcher.new(value, stub.arguments?)
-      partial = Expectations::ExpectationPartial.new(actual, @location)
-      partial.to_eventually(matcher)
+      target = Expectation::Target.new(actual, @location)
+      target.to_eventually(matcher)
     end
 
     def to(stubs : Enumerable(MethodStub)) : Nil