diff --git a/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/DefaultGenerationConfig.java b/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/DefaultGenerationConfig.java
index 3d225cb77..efd4a9382 100644
--- a/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/DefaultGenerationConfig.java
+++ b/jsonschema2pojo-core/src/main/java/org/jsonschema2pojo/DefaultGenerationConfig.java
@@ -227,6 +227,6 @@ public boolean isConstructorsRequiredPropertiesOnly() {
 
     @Override
     public boolean isIncludeAdditionalProperties() {
-        return false;
+        return true;
     }
 }
\ No newline at end of file