diff --git a/kotlin/codegen/src/main/java/com/squareup/moshi/kotlin/codegen/api/AdapterGenerator.kt b/kotlin/codegen/src/main/java/com/squareup/moshi/kotlin/codegen/api/AdapterGenerator.kt
index 00214ac..2f93040 100644
--- a/kotlin/codegen/src/main/java/com/squareup/moshi/kotlin/codegen/api/AdapterGenerator.kt
+++ b/kotlin/codegen/src/main/java/com/squareup/moshi/kotlin/codegen/api/AdapterGenerator.kt
@@ -18,7 +18,6 @@ package com.squareup.moshi.kotlin.codegen.api
 import com.squareup.kotlinpoet.ARRAY
 import com.squareup.kotlinpoet.AnnotationSpec
 import com.squareup.kotlinpoet.CodeBlock
-import com.squareup.kotlinpoet.CodeBlock.Companion
 import com.squareup.kotlinpoet.FileSpec
 import com.squareup.kotlinpoet.FunSpec
 import com.squareup.kotlinpoet.INT
@@ -478,8 +477,10 @@ internal class AdapterGenerator(
           localConstructorProperty
       )
     } else {
-      // Standard constructor call. Can omit generics as they're inferred
-      result.addCode("«%L%T(", returnOrResultAssignment, originalTypeName.rawType())
+      // Standard constructor call. Don't omit generics for parameterized types even if they can be
+      // inferred, as calculating the right condition for inference exceeds the value gained from
+      // being less pedantic.
+      result.addCode("«%L%T(", returnOrResultAssignment, originalTypeName)
     }
 
     for (input in components.filterIsInstance<ParameterComponent>()) {