diff --git a/src/mi/Gget_proc_name.c b/src/mi/Gget_proc_name.c
index 5376f82..64d2503 100644
--- a/src/mi/Gget_proc_name.c
+++ b/src/mi/Gget_proc_name.c
@@ -106,8 +106,12 @@ unw_get_proc_name (unw_cursor_t *cursor, char *buf, size_t buf_len,
   ip = tdep_get_ip (c);
+#if !defined(__ia64)
   if (c->dwarf.use_prev_instr)
     --ip;
+#endif
   error = get_proc_name (tdep_get_as (c), ip, buf, buf_len, offp,
                          tdep_get_as_arg (c));
+#if !defined(__ia64)
   if (c->dwarf.use_prev_instr && offp != NULL && error == 0)
     *offp += 1;
+#endif
   return error;