--- a/GDBArch_x86.st	Tue Oct 30 14:36:08 2018 +0000
+++ b/GDBArch_x86.st	Tue Oct 30 20:00:46 2018 +0000
@@ -55,15 +55,17 @@
 initialize
     "Invoked at system start or when the class is dynamically loaded."
 
-    (Smalltalk includesKey:#UDIS86) ifFalse:[
-        PackageLoadError ignoreIn:[
-            Smalltalk loadPackage: 'jv:dragonfly/udis86sx'.
-        ]
+     Smalltalk isSmalltalkX ifTrue:[
+        (Smalltalk includesKey:#UDIS86) ifFalse:[
+            PackageLoadError ignoreIn:[
+                Smalltalk loadPackage: 'jv:dragonfly/udis86sx'.
+            ]
+        ].
     ].
 
     "/ please change as required (and remove this comment)
 
-    "Modified: / 16-08-2018 / 13:59:25 / Jan Vrany <jan.vrany@fit.cvut.cz>"
+    "Modified: / 30-10-2018 / 19:39:05 / Jan Vrany <jan.vrany@fit.cvut.cz>"
 ! !
 
 !GDBArch_x86 methodsFor:'accessing'!