diff --git a/demos/sdcard/cmd_test.h b/demos/sdcard/cmd_test.h
index 3127ec7..33a09a9 100644
--- a/demos/sdcard/cmd_test.h
+++ b/demos/sdcard/cmd_test.h
@@ -14,6 +14,7 @@ void comando_test() {
 
       drec = receive_byte_from_MCU();
       drec ^= 0xff;
+      if(TIMEOUT) return;
 
       if(drec != dsend) {
          woz_puts("\rTRANSFER ERROR\r");
@@ -23,7 +24,3 @@ void comando_test() {
       if(dsend == 0x00) woz_putc('*');
    }
 }
-
-void test_via() {
-   
-}
\ No newline at end of file