diff -up openwsman-2.7.1/bindings/ruby/helpers.h.orig openwsman-2.7.1/bindings/ruby/helpers.h
--- openwsman-2.7.1/bindings/ruby/helpers.h.orig	2021-04-07 17:25:55.000000000 +0200
+++ openwsman-2.7.1/bindings/ruby/helpers.h	2022-10-21 08:36:24.901459057 +0200
@@ -47,7 +47,7 @@
  * 
  */
 
-#if SWIGVERSION > 0x020004
+#if SWIG_VERSION > 0x020004
 #define KLASS_DECL(k,t) swig_class *k = (swig_class *)(t->clientdata)
 #define KLASS_OF(x) x->klass
 #else