@@ -24,11 +24,11 @@
 {
 	OFString *version;
 }
 
 #ifdef OF_HAVE_PROPERTIES
-@property (readonly, assign) OFString *version;
+@property (readonly, copy, nonatomic) OFString *version;
 #endif
 
 /**
  * \param class_ The class of the object which caused the exception
  * \param version The version which is unsupported