diff --git a/src/query/src/qTsbuf.c b/src/query/src/qTsbuf.c
index fe39fe4e4a..95581e1869 100644
--- a/src/query/src/qTsbuf.c
+++ b/src/query/src/qTsbuf.c
@@ -72,6 +72,7 @@ STSBuf* tsBufCreateFromFile(const char* path, bool autoDelete) {
 
   // invalid file
   if (header.magic != TS_COMP_FILE_MAGIC) {
+    tsBufDestroy(pTSBuf);
     return NULL;
   }
   
diff --git a/src/query/tests/CMakeLists.txt b/src/query/tests/CMakeLists.txt
index 1856223391..bd7dcd4b89 100644
--- a/src/query/tests/CMakeLists.txt
+++ b/src/query/tests/CMakeLists.txt
@@ -10,6 +10,6 @@ IF (HEADER_GTEST_INCLUDE_DIR AND LIB_GTEST_STATIC_DIR)
     INCLUDE_DIRECTORIES(${HEADER_GTEST_INCLUDE_DIR})
     AUX_SOURCE_DIRECTORY(${CMAKE_CURRENT_SOURCE_DIR} SOURCE_LIST)
 
-    ADD_EXECUTABLE(queryTest ${SOURCE_LIST})
+    ADD_EXECUTABLE(queryTest ./unitTest.cpp ./tsBufTest.cpp)
     TARGET_LINK_LIBRARIES(queryTest taos query gtest pthread gcov)
 ENDIF()
diff --git a/src/query/tests/tsBufTest.cpp b/src/query/tests/tsBufTest.cpp
index 28b1d9cefe..f8738eec9c 100644
--- a/src/query/tests/tsBufTest.cpp
+++ b/src/query/tests/tsBufTest.cpp
@@ -47,6 +47,8 @@ void simpleTest() {
   EXPECT_EQ(pTSBuf->block.numOfElem, num);
 
   tsBufDestroy(pTSBuf);
+
+  free(list);
 }
 
 // one large list of ts, the ts list need to be split into several small blocks
@@ -71,6 +73,7 @@ void largeTSTest() {
   EXPECT_EQ(pTSBuf->block.numOfElem, num);
 
   tsBufDestroy(pTSBuf);
+  free(list);
 }
 
 void multiTagsTest() {
@@ -208,6 +211,8 @@ void loadDataTest() {
 
   int64_t e = taosGetTimestampUs();
   printf("end:%" PRIu64 ", elapsed:%" PRIu64 ", total obj:%d\n", e, e - s, x);
+  tsBufDestroy(pTSBuf);
+  tsBufDestroy(pNewBuf);
 }
 
 void randomIncTsTest() {}
@@ -338,6 +343,8 @@ void TSTraverse() {
       }
     }
   }
+
+  tsBufDestroy(pTSBuf);
 }
 
 void performanceTest() {}
@@ -352,9 +359,12 @@ void invalidFileTest() {
 
   STSBuf* pNewBuf = tsBufCreateFromFile("/tmp/test", true);
   EXPECT_TRUE(pNewBuf == NULL);
+  tsBufDestroy(pNewBuf);
 
   pNewBuf = tsBufCreateFromFile("/tmp/911", true);
   EXPECT_TRUE(pNewBuf == NULL);
+
+  tsBufDestroy(pNewBuf);
 }
 
 void mergeDiffVnodeBufferTest() {