diff --git a/common_param.h b/common_param.h
index f1cac38d1..6276f7f51 100644
--- a/common_param.h
+++ b/common_param.h
@@ -41,6 +41,9 @@
 
 #ifndef ASSEMBLER
 
+#ifndef BFLOAT16
+typedef unsigned short bfloat16;
+#endif
 #ifdef DYNAMIC_ARCH
 
 typedef struct {