diff --git a/release/aarch64/uart_read_test_main.out b/release/aarch64/uart_read_test_main.out
index b200024..58bedf3 100755
Binary files a/release/aarch64/uart_read_test_main.out and b/release/aarch64/uart_read_test_main.out differ
diff --git a/uart_read_test_main.cpp b/uart_read_test_main.cpp
index 90f0e57..d9c1947 100644
--- a/uart_read_test_main.cpp
+++ b/uart_read_test_main.cpp
@@ -70,11 +70,11 @@ int main(int argc, char *argv[]) {
     if (ret1 != 0) {
       printf("%x", buf[0]);
       i++;
+      if (i % 20 == 0) {
+        printf("\n");
+      }
     }
     fflush(stdout);
-    if (i % 20 == 0) {
-      printf("\n");
-    }
   }
 
   while (1) {