diff --git a/src/c/src/mt_adaptor.c b/src/c/src/mt_adaptor.c
index 7dc7878..9c62991 100644
--- a/src/c/src/mt_adaptor.c
+++ b/src/c/src/mt_adaptor.c
@@ -483,13 +483,7 @@ int32_t inc_ref_counter(zhandle_t* zh,int i)
 int32_t fetch_and_add(volatile int32_t* operand, int incr)
 {
 #ifndef WIN32
-    int32_t result;
-    asm __volatile__(
-         "lock xaddl %0,%1\n"
-         : "=r"(result), "=m"(*(int *)operand)
-         : "0"(incr)
-         : "memory");
-   return result;
+    return __sync_fetch_and_add(operand, incr);
 #else
     volatile int32_t result;
     _asm