diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index ccb4cce199f256f781a6072971ea3eb8f02a3e68..5e2b1b33b96276c4d35aa01c3594e6846899459b 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -4235,8 +4235,8 @@ static int32_t doOpenReaderImpl(STsdbReader* pReader) {
 }
 
 static void freeSchemaFunc(void* param) {
-  void* p = *(void**)param;
-  taosMemoryFreeClear(p);
+  void **p = (void **)param;
+  taosMemoryFreeClear(*p);
 }
 
 // ====================================== EXPOSED APIs ======================================