diff --git a/lib/relation-definition.js b/lib/relation-definition.js
index 3b574331..5fe8af3d 100644
--- a/lib/relation-definition.js
+++ b/lib/relation-definition.js
@@ -869,7 +869,7 @@ HasMany.prototype.destroyById = function (fkId, options, cb) {
     if (err) {
       return cb(err);
     }
-    self.removeFromCache(inst[fkId]);
+    self.removeFromCache(fkId);
     inst.destroy(options, cb);
   });
   return cb.promise;