diff --git a/src/kit/taospack/taospack.c b/src/kit/taospack/taospack.c
index f3b47cb88e56f1279ecea2931976530cf6b29ddd..067d419b11711bb60cea14290d4a4638d14ec255 100644
--- a/src/kit/taospack/taospack.c
+++ b/src/kit/taospack/taospack.c
@@ -348,7 +348,7 @@ bool txt_to_bin(const char* inFile, const char* outFile){
   fclose(pfout);
 
   // total
-  printf(" count=%d  write bytes=%d \n", count, (int)count*sizeof(float));
+  printf(" count=%d  write bytes=%d \n", count, (int)(count*sizeof(float)));
   return true;
 }