diff --git a/examples/file/readspeed.c b/examples/file/readspeed.c
index a41c12655..d83fdcb20 100644
--- a/examples/file/readspeed.c
+++ b/examples/file/readspeed.c
@@ -55,7 +55,7 @@ void readspeed(const char* filename, int block_size)
 	rt_free(buff_ptr);
 
     /* calculate read speed */
-    rt_kprintf("File read speed: %d byte/s\n", total_length*RT_TICK_PER_SECOND/tick);
+    rt_kprintf("File read speed: %d byte/s\n", total_length /tick * RT_TICK_PER_SECOND);
 }
 
 #ifdef RT_USING_FINSH
diff --git a/examples/file/writespeed.c b/examples/file/writespeed.c
index 157b24f47..5fa2f4445 100644
--- a/examples/file/writespeed.c
+++ b/examples/file/writespeed.c
@@ -63,7 +63,7 @@ void writespeed(const char* filename, int total_length, int block_size)
 	rt_free(buff_ptr);
 
     /* calculate write speed */
-    rt_kprintf("File write speed: %d byte/s\n", total_length*RT_TICK_PER_SECOND/tick);
+    rt_kprintf("File write speed: %d byte/s\n", total_length / tick * RT_TICK_PER_SECOND);
 }
 
 #ifdef RT_USING_FINSH