diff --git a/paddle/fluid/framework/executor.cc b/paddle/fluid/framework/executor.cc
index 32c0a3d41b526e5be343e5a6535dfd7eb541fe1a..af127937e78e4c19e98cb7fa8b2501091b3d0cbe 100644
--- a/paddle/fluid/framework/executor.cc
+++ b/paddle/fluid/framework/executor.cc
@@ -352,8 +352,8 @@ void Executor::RunPreparedContext(ExecutorPrepareContext* ctx, Scope* scope,
       // some operators may create local scope when running, such as while_op.
       // But when while_op also create a local executor to run it's sub block,
       // the sub scopes it created should not be dropped immediately, because
-      // while_grad_op will use some variables during while_op run, so we need
-      // to keep the kids and wait for the outer executor to drop them.
+      // while_grad_op will use some variables created during while_op run, so
+      // we need to keep the kids and wait for the outer executor to drop them.
       scope->DropKids();
     }
   }