diff --git a/angel_container/lib/src/mirrors/reflector.dart b/angel_container/lib/src/mirrors/reflector.dart
index 2212977f..9cf07fb1 100644
--- a/angel_container/lib/src/mirrors/reflector.dart
+++ b/angel_container/lib/src/mirrors/reflector.dart
@@ -71,7 +71,13 @@ class _ReflectedTypeMirror extends ReflectedType {
 
   @override
   bool isAssignableTo(ReflectedType other) {
-    return other is _ReflectedTypeMirror && mirror.isAssignableTo(other.mirror);
+    if (other is _ReflectedClassMirror) {
+      return mirror.isAssignableTo(other.mirror);
+    } else if (other is _ReflectedTypeMirror) {
+      return mirror.isAssignableTo(other.mirror);
+    } else {
+      return false;
+    }
   }
 
   @override
@@ -136,7 +142,13 @@ class _ReflectedClassMirror extends ReflectedClass {
 
   @override
   bool isAssignableTo(ReflectedType other) {
-    return other is _ReflectedTypeMirror && mirror.isAssignableTo(other.mirror);
+    if (other is _ReflectedClassMirror) {
+      return mirror.isAssignableTo(other.mirror);
+    } else if (other is _ReflectedTypeMirror) {
+      return mirror.isAssignableTo(other.mirror);
+    } else {
+      return false;
+    }
   }
 
   @override
diff --git a/angel_container/test/common.dart b/angel_container/test/common.dart
index 53101422..52b8a6d2 100644
--- a/angel_container/test/common.dart
+++ b/angel_container/test/common.dart
@@ -69,6 +69,17 @@ void testReflector(Reflector reflector) {
     expect(instance.name, 'Charizard');
     expect(instance.type, PokemonType.fire);
   });
+
+  test('isAssignableTo', () {
+    var pokemonType = container.reflector.reflectType(Pokemon);
+    var kantoPokemonType = container.reflector.reflectType(KantoPokemon);
+
+    expect(kantoPokemonType.isAssignableTo(pokemonType), true);
+    expect(
+        kantoPokemonType
+            .isAssignableTo(container.reflector.reflectType(String)),
+        false);
+  });
 }
 
 class LowerPokemon {
@@ -93,4 +104,8 @@ class Pokemon {
   String toString() => 'NAME: $name, TYPE: $type';
 }
 
+class KantoPokemon extends Pokemon {
+  KantoPokemon(String name, PokemonType type) : super(name, type);
+}
+
 enum PokemonType { water, fire, grass, ice, poison, flying }