1 files changed, 1 insertions, 1 deletions
diff --git a/ext/digest/digest.c b/ext/digest/digest.c
index 0b910e8c47..41565759bb 100644
--- a/ext/digest/digest.c
+++ b/ext/digest/digest.c
@@ -426,7 +426,7 @@ get_digest_base_metadata(VALUE klass)
     VALUE obj;
     rb_digest_metadata_t *algo;
 
-    for (p = klass; p; p = RCLASS(p)->super) {
+    for (p = klass; p; p = RCLASS_SUPER(p)) {
         if (rb_ivar_defined(p, id_metadata)) {
             obj = rb_ivar_get(p, id_metadata);
             break;