diff --git a/be/src/storage/tablet_updates.cpp b/be/src/storage/tablet_updates.cpp
index 8f08141f17b47..060fa45cbf8b7 100644
--- a/be/src/storage/tablet_updates.cpp
+++ b/be/src/storage/tablet_updates.cpp
@@ -3266,7 +3266,7 @@ void TabletUpdates::get_compaction_status(std::string* json_result) {
     rapidjson::Value last_version_value;
     std::string last_version_str =
             strings::Substitute("$0_$1", last_version.major_number(), last_version.minor_number());
-    rowsets_count.SetString(last_version_str.c_str(), last_version_str.size(), root.GetAllocator());
+    last_version_value.SetString(last_version_str.c_str(), last_version_str.size(), root.GetAllocator());
     root.AddMember("last_version", last_version_value, root.GetAllocator());
 
     rapidjson::Document rowset_details;
diff --git a/be/test/storage/tablet_updates_test.cpp b/be/test/storage/tablet_updates_test.cpp
index d437ccf1cf8de..6fcf1299631ef 100644
--- a/be/test/storage/tablet_updates_test.cpp
+++ b/be/test/storage/tablet_updates_test.cpp
@@ -1201,7 +1201,7 @@ TEST_F(TabletUpdatesTest, compaction_score_enough_normal) {
 }
 
 // NOLINTNEXTLINE
-void TabletUpdatesTest::test_horizontal_compaction(bool enable_persistent_index) {
+void TabletUpdatesTest::test_horizontal_compaction(bool enable_persistent_index, bool show_status) {
     auto orig = config::vertical_compaction_max_columns_per_group;
     config::vertical_compaction_max_columns_per_group = 5;
     DeferOp unset_config([&] { config::vertical_compaction_max_columns_per_group = orig; });
@@ -1234,6 +1234,12 @@ void TabletUpdatesTest::test_horizontal_compaction(bool enable_persistent_index)
     // the time interval is not enough after last compaction
     EXPECT_EQ(best_tablet->updates()->get_compaction_score(), -1);
     EXPECT_TRUE(best_tablet->verify().ok());
+
+    if (show_status) {
+        std::string json_result;
+        best_tablet->updates()->get_compaction_status(&json_result);
+        EXPECT_TRUE(json_result.find("\"last_version\": \"4_1\"") != std::string::npos);
+    }
 }
 
 // NOLINTNEXTLINE
@@ -3704,4 +3710,8 @@ TEST_F(TabletUpdatesTest, test_compaction_apply_retry) {
     std::this_thread::sleep_for(std::chrono::milliseconds(200));
 }
 
+TEST_F(TabletUpdatesTest, test_get_compaction_status) {
+    test_horizontal_compaction(false, true);
+}
+
 } // namespace starrocks
diff --git a/be/test/storage/tablet_updates_test.h b/be/test/storage/tablet_updates_test.h
index d94cfd248631d..5024401ab8705 100644
--- a/be/test/storage/tablet_updates_test.h
+++ b/be/test/storage/tablet_updates_test.h
@@ -793,7 +793,7 @@ class TabletUpdatesTest : public testing::Test {
     void test_compaction_score_not_enough(bool enable_persistent_index);
     void test_compaction_score_enough_duplicate(bool enable_persistent_index);
     void test_compaction_score_enough_normal(bool enable_persistent_index);
-    void test_horizontal_compaction(bool enable_persistent_index);
+    void test_horizontal_compaction(bool enable_persistent_index, bool show_status = false);
     void test_vertical_compaction(bool enable_persistent_index);
     void test_horizontal_compaction_with_rows_mapper(bool enable_persistent_index);
     void test_vertical_compaction_with_rows_mapper(bool enable_persistent_index);