diff --git a/jsonschema-generator/src/main/java/com/github/victools/jsonschema/generator/impl/AttributeCollector.java b/jsonschema-generator/src/main/java/com/github/victools/jsonschema/generator/impl/AttributeCollector.java
index 22a8e803..76aa3088 100644
--- a/jsonschema-generator/src/main/java/com/github/victools/jsonschema/generator/impl/AttributeCollector.java
+++ b/jsonschema-generator/src/main/java/com/github/victools/jsonschema/generator/impl/AttributeCollector.java
@@ -438,7 +438,8 @@ private boolean isSupportedEnumValue(Object target) {
                 || Boolean.class.isAssignableFrom(targetType)
                 || Number.class.isAssignableFrom(targetType)
                 || CharSequence.class.isAssignableFrom(targetType)
-                || Enum.class.isAssignableFrom(targetType);
+                || Enum.class.isAssignableFrom(targetType)
+                || Map.class.isAssignableFrom(targetType);
     }
 
     /**