diff --git a/moshi/src/main/java/com/squareup/moshi/ClassJsonAdapter.java b/moshi/src/main/java/com/squareup/moshi/ClassJsonAdapter.java
index 7d4b5bc..1fcb918 100644
--- a/moshi/src/main/java/com/squareup/moshi/ClassJsonAdapter.java
+++ b/moshi/src/main/java/com/squareup/moshi/ClassJsonAdapter.java
@@ -47,7 +47,7 @@ final class ClassJsonAdapter<T> extends JsonAdapter<T> {
   public static final JsonAdapter.Factory FACTORY = new JsonAdapter.Factory() {
     @Override public @Nullable JsonAdapter<?> create(
         Type type, Set<? extends Annotation> annotations, Moshi moshi) {
-      if (!(type instanceof Class || type instanceof ParameterizedType)) {
+      if (!(type instanceof Class) && !(type instanceof ParameterizedType)) {
         return null;
       }
       Class<?> rawType = Types.getRawType(type);