diff --git a/src/json-validator.cpp b/src/json-validator.cpp
index 7f34553..3c73d98 100644
--- a/src/json-validator.cpp
+++ b/src/json-validator.cpp
@@ -553,6 +553,9 @@ class type_schema : public schema
 					else_->validate(ptr, instance, patch, e);
 			}
 		}
+		if (instance.is_null()) {
+			patch.add(nlohmann::json::json_pointer{}, default_value_);
+		}
 	}
 
 protected:
@@ -1134,6 +1137,11 @@ public:
 			propertyNames_ = schema::make(attr.value(), root, {"propertyNames"}, uris);
 			sch.erase(attr);
 		}
+
+		attr = sch.find("default");
+		if (attr != sch.end()) {
+			set_default_value(*attr);
+		}
 	}
 };