1 files changed, 2 insertions, 0 deletions
diff --git a/src/init.c b/src/init.c
index a515ee880..e2ab62339 100644
--- a/src/init.c
+++ b/src/init.c
@@ -49,7 +49,9 @@ mrb_init_core(mrb_state *mrb)
   mrb_init_hash(mrb);
   mrb_init_numeric(mrb);
   mrb_init_range(mrb);
+#ifdef ENABLE_STRUCT
   mrb_init_struct(mrb);
+#endif
   mrb_init_gc(mrb);
 #ifdef ENABLE_REGEXP
   mrb_init_regexp(mrb);