1 files changed, 0 insertions, 1 deletions
diff --git a/src/core/defs.h b/src/core/defs.h
index 1d656bb2..b9c9b7e5 100644
--- a/src/core/defs.h
+++ b/src/core/defs.h
@@ -59,7 +59,6 @@ typedef struct nni_proto             nni_proto;
 
 typedef struct nni_plat_mtx nni_mtx;
 typedef struct nni_plat_cv  nni_cv;
-typedef struct nni_idhash   nni_idhash;
 typedef struct nni_thr      nni_thr;
 typedef void (*nni_thr_func)(void *);