diff --git a/common/xyzModem.c b/common/xyzModem.c
index a126e32ed35e61b50a350074cc6ffe1f3276000e..519e414a6c10f4073e9d7421750e95d92b304d08 100644
--- a/common/xyzModem.c
+++ b/common/xyzModem.c
@@ -171,7 +171,7 @@ parse_num (char *s, unsigned long *val, char **es, char *delim)
 }
 
 
-#ifdef DEBUG
+#if defined(DEBUG) && !defined(CONFIG_USE_TINY_PRINTF)
 /*
  * Note: this debug setup works by storing the strings in a fixed buffer
  */