diff --git a/core/components/audio/wavheader.hpp b/core/components/audio/wavheader.hpp
index b916bdf..27796fa 100644
--- a/core/components/audio/wavheader.hpp
+++ b/core/components/audio/wavheader.hpp
@@ -91,7 +91,7 @@ class WAVHeader {
     header.bits_per_sample = bits_per_sample;
 
     // 填充 data 子块
-    strcpy(header.subchunk2_id, "data");
+    memcpy(header.subchunk2_id, "data",4);
     header.subchunk2_size = wavbinsize;
   }
   void resize(uint32_t wavbinsize) {