1 files changed, 5 insertions, 1 deletions
diff --git a/src/nvim/eval/typval.h b/src/nvim/eval/typval.h
index d1275d6512..40dc819754 100644
--- a/src/nvim/eval/typval.h
+++ b/src/nvim/eval/typval.h
@@ -72,16 +72,20 @@ typedef enum {
   kCallbackNone = 0,
   kCallbackFuncref,
   kCallbackPartial,
+  kCallbackLua,
 } CallbackType;
 
 typedef struct {
   union {
     char_u *funcref;
     partial_T *partial;
+    LuaRef luaref;
   } data;
   CallbackType type;
 } Callback;
-#define CALLBACK_NONE ((Callback){ .type = kCallbackNone })
+
+#define CALLBACK_INIT { .type = kCallbackNone }
+#define CALLBACK_NONE ((Callback)CALLBACK_INIT)
 
 /// Structure holding dictionary watcher
 typedef struct dict_watcher {