diff --git a/src/mesh/compression/unishox2.c b/src/mesh/compression/unishox2.c
index e1f32ae05..2a8d35350 100644
--- a/src/mesh/compression/unishox2.c
+++ b/src/mesh/compression/unishox2.c
@@ -125,7 +125,7 @@ byte is_inited = 0;
 void init_coder() {
   if (is_inited)
     return;
-  memset(usx_code_94, '\0', sizeof(usx_code_94));
+  memset_s(usx_code_94, '\0', sizeof(usx_code_94));
   for (int i = 0; i < 3; i++) {
     for (int j = 0; j < 28; j++) {
       byte c = usx_sets[i][j];