diff --git a/src/graph/planner/SequentialPlanner.h b/src/graph/planner/SequentialPlanner.h
index 4f60461ce04..656bede413e 100644
--- a/src/graph/planner/SequentialPlanner.h
+++ b/src/graph/planner/SequentialPlanner.h
@@ -6,8 +6,6 @@
 #ifndef GRAPH_PLANNER_PLANNERS_SEQUENTIALPLANNER_H_
 #define GRAPH_PLANNER_PLANNERS_SEQUENTIALPLANNER_H_
 
-#include <memory>
-
 #include "graph/context/QueryContext.h"
 #include "graph/planner/Planner.h"
 
diff --git a/src/graph/validator/Validator.cpp b/src/graph/validator/Validator.cpp
index 34d35c78a67..1ded8d25335 100644
--- a/src/graph/validator/Validator.cpp
+++ b/src/graph/validator/Validator.cpp
@@ -7,8 +7,6 @@
 
 #include <thrift/lib/cpp/util/EnumUtils.h>
 
-#include <set>
-
 #include "common/function/FunctionManager.h"
 #include "graph/planner/plan/PlanNode.h"
 #include "graph/planner/plan/Query.h"
@@ -308,7 +306,7 @@ Status Validator::appendPlan(PlanNode* node, PlanNode* appended) {
   // Note: there's check which forbids sentence like `[dql(or other) ngql];[cypher]`.
   // So there's a kStart planNode in the cypher sentence of end.
   // But this check is not needed for `use space` or other sentence.
-  if (skipTypeSet.find(appended->kind()) != skipTypeSet.end() || !node->isSingleInput()) {
+  if (skipTypeSet.find(appended->kind()) == skipTypeSet.end() && !node->isSingleInput()) {
     return Status::SemanticError("PlanNode(%s) not support to append an input.",
                                  PlanNode::toString(node->kind()));
   }
diff --git a/tests/tck/features/match/Base.feature b/tests/tck/features/match/Base.feature
index 13573b18c47..449c548b8d4 100644
--- a/tests/tck/features/match/Base.feature
+++ b/tests/tck/features/match/Base.feature
@@ -699,3 +699,14 @@ Feature: Basic match
     Then the result should be, in any order:
       | v                                                                                                          |
       | ("Tim Duncan":bachelor{name: "Tim Duncan", speciality: "psychology"} :player{age: 42, name: "Tim Duncan"}) |
+
+  @wen
+  Scenario: Sequential sentence
+    When executing query:
+      """
+      USE nba;
+      MATCH (n:player) RETURN n LIMIT 1;
+      """
+    Then the result should be, in any order:
+      | n                                                   |
+      | ("Boris Diaw" :player{age: 36, name: "Boris Diaw"}) |