--- screen-4.0.2/misc.c	2003-12-05 19:15:41.000000000 +0530
+++ screen-4.0.2-new/misc.c	2006-04-03 16:46:19.150133000 +0530
@@ -613,7 +613,7 @@
    */
 # endif /* NEEDSETENV */
 #else /* USESETENV */
-# if defined(linux) || defined(__convex__) || (BSD >= 199103)
+# if defined(linux) || defined(__convex__) || (BSD >= 199103) || (__sun)
   setenv(var, value, 1);
 # else
   setenv(var, value);