1 files changed, 2 insertions, 2 deletions
diff --git a/test/driver.c b/test/driver.c
index 0116f4584..296386060 100644
--- a/test/driver.c
+++ b/test/driver.c
@@ -67,8 +67,8 @@ t_printstr(mrb_state *mrb, mrb_value obj)
    
   if (mrb_string_p(obj)) {
     str = mrb_str_ptr(obj);
-    s = str->ptr;
-    len = str->len;
+    s = str->as.heap.ptr;
+    len = str->as.heap.len;
     fwrite(s, len, 1, stdout);
   }
 }