diff --git a/halconf.h b/halconf.h
index 0b48487..9a90280 100644
--- a/halconf.h
+++ b/halconf.h
@@ -317,7 +317,7 @@
  *          buffers.
  */
 #if !defined(SERIAL_USB_BUFFERS_SIZE) || defined(__DOXYGEN__)
-#define SERIAL_USB_BUFFERS_SIZE     128
+#define SERIAL_USB_BUFFERS_SIZE     32
 #endif
 
 /**