diff --git a/expat/tests/handlers.h b/expat/tests/handlers.h
index 5b50cb16..b87e9e78 100644
--- a/expat/tests/handlers.h
+++ b/expat/tests/handlers.h
@@ -47,6 +47,8 @@ extern "C" {
 #ifndef XML_HANDLERS_H
 #  define XML_HANDLERS_H
 
+#  include "expat_config.h"
+
 #  include "expat.h"
 
 /* Variable holding the expected handler userData */