diff --git a/VContainer/Assets/VContainer/Runtime/RegistrationBuilder.cs b/VContainer/Assets/VContainer/Runtime/RegistrationBuilder.cs
index 46409622..98138717 100644
--- a/VContainer/Assets/VContainer/Runtime/RegistrationBuilder.cs
+++ b/VContainer/Assets/VContainer/Runtime/RegistrationBuilder.cs
@@ -108,7 +108,7 @@ public RegistrationBuilder WithParameter(Type type, object value)
             return this;
         }
 
-        public RegistrationBuilder WithParameter<TParam>(object value)
+        public RegistrationBuilder WithParameter<TParam>(TParam value)
         {
             return WithParameter(typeof(TParam), value);
         }
diff --git a/VContainer/Assets/VContainer/Runtime/Unity/ContainerBuilderUnityExtensions.cs b/VContainer/Assets/VContainer/Runtime/Unity/ContainerBuilderUnityExtensions.cs
index 8c6636e9..7dce1210 100644
--- a/VContainer/Assets/VContainer/Runtime/Unity/ContainerBuilderUnityExtensions.cs
+++ b/VContainer/Assets/VContainer/Runtime/Unity/ContainerBuilderUnityExtensions.cs
@@ -64,14 +64,12 @@ public static void UseEntryPoints(
             Lifetime lifetime,
             Action<EntryPointsBuilder> configuration)
         {
-            var entryPoints = new EntryPointsBuilder(builder, lifetime);
-            configuration(entryPoints);
+            configuration(new EntryPointsBuilder(builder, lifetime));
         }
 
         public static void UseComponents(this IContainerBuilder builder, Action<ComponentsBuilder> configuration)
         {
-            var components = new ComponentsBuilder(builder);
-            configuration(components);
+            configuration(new ComponentsBuilder(builder));
         }
 
         public static void UseComponents(
@@ -79,8 +77,7 @@ public static void UseComponents(
             Transform root,
             Action<ComponentsBuilder> configuration)
         {
-            var components = new ComponentsBuilder(builder, root);
-            configuration(components);
+            configuration(new ComponentsBuilder(builder, root));
         }
 
         public static RegistrationBuilder RegisterEntryPoint<T>(this IContainerBuilder builder, Lifetime lifetime)