diff --git a/generator/accessor/src/main/kotlin/me/kcra/takenaka/generator/accessor/context/impl/KotlinGenerationContext.kt b/generator/accessor/src/main/kotlin/me/kcra/takenaka/generator/accessor/context/impl/KotlinGenerationContext.kt
index 5cdabc8d759..8a3ca6100b7 100644
--- a/generator/accessor/src/main/kotlin/me/kcra/takenaka/generator/accessor/context/impl/KotlinGenerationContext.kt
+++ b/generator/accessor/src/main/kotlin/me/kcra/takenaka/generator/accessor/context/impl/KotlinGenerationContext.kt
@@ -391,7 +391,7 @@ open class KotlinGenerationContext(
         PropertySpec.builder(namingStrategy.member(GeneratedMemberType.LOOKUP), types.KT_MAPPING_LOOKUP)
             .addKdoc("Mapping lookup index.")
             .initializer {
-                beginControlFlow("%M", types.KT_MAPPING_LOOKUP)
+                beginControlFlow("%M", types.KT_MAPPING_LOOKUP_DSL)
 
                 names.forEach { name ->
                     addStatement("put(%T)", name.toKClassName())