diff --git a/openapi/schema.go b/openapi/schema.go
index 4a6f87f..a165863 100644
--- a/openapi/schema.go
+++ b/openapi/schema.go
@@ -225,7 +225,7 @@ func generateSchemaRecursive(t reflect.Type, seen map[string]bool) *openapi3.Sch
 		}
 		return &openapi3.SchemaRef{
 			Value: openapi3.NewObjectSchema().
-				WithAdditionalProperties(valueSchema),
+				WithAdditionalProperties(valueSchema.Value),
 		}
 
 	case reflect.Ptr:
@@ -253,11 +253,10 @@ func applyFieldInfoToSchema(schema *openapi3.Schema, info *StructFieldInfo) {
 	if info.Example != nil {
 		schema.Example = info.Example
 	}
-	if info.Min != nil {
-		schema.Min = &openapi3.Min{Value: *info.Min}
-	}
+	schema.Min = info.Min
+
 	if info.Max != nil {
-		schema.Max = &openapi3.Max{Value: *info.Max}
+		schema.Max = info.Max
 	}
 	if info.MinLength != nil {
 		schema.MinLength = *info.MinLength