diff --git a/src/os/inc/osRand.h b/src/os/inc/osRand.h
index 310340d4200bb55a17a7043f28c981dd64f28a23..803c0688bb4a9c5fab117d8548206e70b5f152db 100644
--- a/src/os/inc/osRand.h
+++ b/src/os/inc/osRand.h
@@ -23,7 +23,7 @@ extern "C" {
 // TAOS_OS_FUNC_RAND
 uint32_t taosRand(void);
 void taosRandStr(char* str, int32_t size);
-uint32_t trand(void);
+uint32_t taosSafeRand(void);
 
 #ifdef __cplusplus
 }
diff --git a/src/os/src/detail/osRand.c b/src/os/src/detail/osRand.c
index 7e5f58563455ce9271a1bac0f41fe722f0896a1f..edb8642bd65660e69deb59a61ccaf70c95f3ad8b 100644
--- a/src/os/src/detail/osRand.c
+++ b/src/os/src/detail/osRand.c
@@ -20,7 +20,7 @@
 
 uint32_t taosRand(void) { return rand(); }
 
-uint32_t trand(void) {
+uint32_t taosSafeRand(void) {
   int fd;
   int seed;
 
diff --git a/tests/tsim/src/simMain.c b/tests/tsim/src/simMain.c
index 5b2fc87307e0f57cbc73ccb26898304f2517d606..ef1a488f602959b740cbe863cc22654a24b2d41b 100644
--- a/tests/tsim/src/simMain.c
+++ b/tests/tsim/src/simMain.c
@@ -16,6 +16,7 @@
 #include "os.h"
 #include "tglobal.h"
 #include "sim.h"
+#undef TAOS_MEM_CHECK
 
 bool simAsyncQuery = false;