diff --git a/src/util/src/talloc.c b/src/util/src/talloc.c
index 6f23b39393..d3d8ee8116 100644
--- a/src/util/src/talloc.c
+++ b/src/util/src/talloc.c
@@ -17,8 +17,10 @@
 #include "os.h"
 #include "taoserror.h"
 #include "tulog.h"
+#include "talloc.h"
 
 #define TSDB_HAVE_MEMALIGN
+#ifndef TSDB_USE_SYS_MEM
 
 void *tmalloc(int32_t size) {
   void *p = malloc(size);
@@ -74,3 +76,4 @@ void *tmemalign(int32_t alignment, int32_t size) {
 void *tmemalign(int32_t alignment, int32_t size) { return tmalloc(size); }
 
 #endif
+#endif
\ No newline at end of file