diff --git a/contrib/irrXML/irrXML.h b/contrib/irrXML/irrXML.h
index 5aa19e4a7..d596ec062 100644
--- a/contrib/irrXML/irrXML.h
+++ b/contrib/irrXML/irrXML.h
@@ -8,9 +8,9 @@
 #include <stdio.h>
 
 #ifdef _WIN32
-#    define IRRXML_API __declspec(dllexport)
+#   define IRRXML_API __declspec(dllexport)
 #else
-#    define IRRXML_API
+#   define IRRXML_API __attribute__ ((visibility("default")))
 #endif // _WIN32
 
 /** \mainpage irrXML 1.2 API documentation