diff --git a/src/vm.c b/src/vm.c
index 48a329a7d..9915200de 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -299,7 +299,7 @@ localjump_error(mrb_state *mrb, const char *kind)
 
 #define SET_SYM_VALUE(r,v) {\
   (r).tt = MRB_TT_SYMBOL;\
-  (r).value.i = (v);\
+  (r).value.sym = (v);\
 }
 
 #define SET_OBJ_VALUE(r,v) {\