diff --git a/src/shell-global.c b/src/shell-global.c
index 3f9ee8d4f..b30669412 100644
--- a/src/shell-global.c
+++ b/src/shell-global.c
@@ -1258,7 +1258,7 @@ shell_global_reexec_self (ShellGlobal *global)
   GPtrArray *arr;
   gsize len;
 
-#if defined __linux__
+#if defined __linux__ || defined __sun
   char *buf;
   char *buf_p;
   char *buf_end;